I was the IT Director for a company that had a lot of data entry people. I had noticed that the keyboards that they were using were mostly plane jane, mismatched, membrane keyboards. After a bit of back and forth with purchasing I convinced the company to purchase a ton of mechanical (cherry reds), split ergonomic keyboards.

Within a month RSI reports were down by 95% and after 2 months were essentially nonexistent. I also noticed that people had stopped wearing wrist braces as well. I paired this with good, well shaped mice that would hopefully lead to less fatigue with repetitive motion.

My sample size is tiny, but there are 30 some odd people who if asked, would back me up on this. So while not thoroughly scientifically proven, I am willing to say that ergonomic keyboards do make a big difference. I think mechanical makes a pretty big difference too. Cherry reds activate with very little pressure and, imo, make typing long documents or notes much less annoying/stressful/painful/

While I do not use tenting or physically split keyboards, I have been using ergonomic split keyboards for ~16 years. Not sure if that exactly fits the category you are looking at.

The specific keyboards have been the Microsoft natural ergonomic keyboard 4000, Microsoft Sculpt, and Logitech ERGO K860. I’ve been gaming on the PC since the early 90s and have been in IT and software development for ~26 years.

I have had no issues with carpal tunnel or RSI. While I obviously cannot say it was 100% due to the split keyboard design I believe it has likely helped to keep those issues at bay. Once you are used to a split keyboard design you can feel the pitch and stress on your wrists when using a standard keyboard. I have also always used the riser that rises the wrist end of the keyboard so you fingers are sort of “falling” down toward the keys.

I used that Microsoft 4000 keyboard for years, cleaned out the membrane on it 2 or 3 times before I had to replace the entire keyboard. Then was left hunting for something to replace it; I tried a lot of keyboards. In the end I’ve settled on the Logitech K860.

I’ve been using a Microsoft natural keyboard since 1998. I switched over to the Elite when they came out and I have several spares stockpiled. They helped a lot with the wrist comfort and honestly they improved by typing by enforcing which fingers press which keys.

I have a hard time using a straight keyboard, not because I can’t adapt but because they’re just plain uncomfortable. So when a thing hurts when you do it then you stop doing it. You’ll see.

I printed out and mostly built a Dactyl keyboard but never got around to finishing it because work is super picky about what USB devices can be hooked up to our machines and QMK firmware will absolutely look like a mouse jiggler to their security scanning software. I had to unplug a frickin’ volume knob because it was alerting every day as a security risk or something.

I’ve used the ergodox ez for a couple of years, great device. Doing more with thumb is surprisingly convenient.

The small poles didn’t do a lot of tenting. I came from yogitype (vertical keyboard), would have liked more.

A few months ago i switched to kinesis 360. Love the tenting of that, the keys are also a pleasure to type on.

Biggest downside is that my laptop keyboard is now even more horrible.

I use the Logitech ergonomic keyboard at work and love it. It does take some getting used to but it is definitely a more comfortable typing experience.

I can’t get by without my lineages advantage 360 pro. It’s a ridiculous keyboard but the only one I’ve ever tried that hasn’t caused my arm to get inflamed after a days typing.

My personal experience and opinions on split keyboards is a bit different than those that have already commented.

I daily drove a Lilly58 for about two years. Switching to the ortho layout took some effort, but not enough to be a deterrent. And with capable and customizable firmware, any keys that were missing on my layout were made easily accessible with layers.

Having a wider shoulder stance felt nice. And being able to adjust the rotation of the boards on any given day to accommodate my posture felt good too.

However, there were a couple of factors that eventually got to me and caused me to switch back to a TKL.

First was the dynamics between mouse and keyboard. I use a mouse with my right hand. Grabbing a mouse then quickly switching my left hand to the right split was awkward. And hovering my hand over the center of the keyboard was not possible. I tried adding a trackball between the two halves and switching hands as needed, but getting my left hand to cooperate was a much bigger hurdle than I expected.

Second was the lack of hand movement. (I think what most find to be a benefit.). Over time I found that my hands would get tired and I would start making a lot more mistakes while typing. It took a while to figure out, but stretching my fingers to reach things like the function row and using my pinkies to reach for the standard modifiers actually gave me a reason to move my arms and wrists and not hold them in the same position for long periods of time. For me, maintaining position and the lack of movement was far more fatiguing then the stretching.

I don’t doubt for a minute that splits are great and that there are benefits to using them. I just think that how much benefit is very personal to the individual using them.

I got a Glove80 recently and so far I love it! It took some getting used to but it’s very comfortable and seems to be helping with my RSI.

I think they’re very good if you use your computer for a whole lot of typing and nothing else. Using a DVORAK keyboard instead of a QWERTY one will also improve your WPM and QoL when typing, once you’re used to it. If you’re a writer or a programmer, it’s worth considering.

But much like DVORAK vs QWERTY, any non-typing tasks become affected. It’s awkward playing PC games, for example, when some of your shortcuts for inventory/map are far enough from your kb hand to need your mouse hand. You also don’t have much range to choose from, so may have to make compromises on things like keypress feedback, simultaneous presses, unit price, etc.

I learned to touch-type on a tented keyboard with a mild split. When I replaced it, I got a ‘Wave’ keyboard - not split, but slightly tented, and had depressions and curves to match the wrist and the finger lengths at rest on the home row. Both of them were membrane keyboards (full-depth keypress). Despite being a membrane keyboard, the Wave was still as chunky and loud as most mechanical keyboards.

But now, I’m just using a generic full-length mechanical keyboard (partial keypress) with relatively quiet switches, one chosen as a good compromise between gaming (sensitivity) and typing (feedback). I’ve changed my resting position a little so that my wrists are still in an A shape (not an H shape), but I’m finding the keys much more comfortable.

The old ergonomic keyboards didn’t give much choice and in hindsight the feedback on the keys on the Wave felt AWFUL compared to what I use now. A split/tent mechanical keyboard might be different, but then price becomes a consideration. Swapping to a mechanical keyboard made the biggest difference to my comfort typing. (And don’t let tall/loud keys fool you - not every chunky keyboard is mechanical.)

I want a split, but I cannot yet justify buying another mech board. I’ve got three currently, and I use one at work, one on my personal PC, and one on my workstation/server machine. I may be able to justify it in the future if my arms/hands start hurting.

If you’re not looking to tinker, the Logitech Ergo K860 is a great keyboard. I had to swap to an ergo keyboard due to wrist issues and it really helped. However, I’m a sucker for mech keyboards (& clickies) so I ended up building an Iris. I don’t have it tented, the ortho + split is enough for me. It took some time to get used to swapping layers but after a while it all becomes muscle memory. I can definitely recommend a split keeb! Iris with KAT Milkshake and Kailh Box Whites

I’ve been thinking about getting a Moonlander for work. Been having some pain in my arms/shoulders/wrists after work. Would be my first split keyboard.

I absolutely adore my kinesis freestyle 2. I have the 15° tilt attachments, and my wrists dont feel uncomfortable at all at the end of the day like they used to.

More anecdata, but 10-15 years ago I started getting RSI/carpal tunnel symptoms in both hands. I switched to tented keyboards (mainly Kinesis) and vertical mice (Anker among others) and the symptoms went away. I was able to finish out a programming career until I retired a few years ago. So thumbs-up from me. If you’re on a Mac, the Kinesis Freestyle is perfectly plug & play. I would recommend checking out a vertical mouse at the same time.

I have a ReDox keyboard built by https://falba.tech/. It took a month of getting used to but once I did I can’t go back. My wrist pain is gone and the layers I built make me faster in practice than I was on a standard layout.