[oerdier]

After getting shoulder bursitis two years ago--although the direct cause was sports, not desk habits--I dove into the world of split ergo keyboards. I did get one (a Kyria v3) and learned to type on it at an acceptable speed--although still significantly slower than my speed on a regular keyboard.

Wanting to optimize my layout, I did research into my typing behavior and logged my keystrokes (and storing these logs as securely as I would a password). Analysis did give me notable insights (e.g. by far my most used keys are arrow keys, for selecting text), but my main conclusion was that even during a regular full day of programming preferring my keyboard over my mouse (tiling window manager, hotkeys, browser extension to virtually click on elements using keys), I don't actually type that much, and if I do, it is in bursts, never more than 20 seconds or so.

Although I find typing on a split fun and comfortable, I went back to a regular keyboard because the hit in productivity is not worth it for me. The experiment did teach me how to improve my ergonomics. I optimized my desk height and bought a very flat and less wide keyboard, with the completely unused numpad section chopped off ("TKL") so if I do grab my mouse there is less travel.