sotolf said:I don't know, I have more the feel that mouse use is a way higher contributor to RSI than what a keyboard is.
This is true also. AFAIK, users of old typewriters had less RSI issues than the users of modern computers. Their hands had great physical exercise every day, and there were no mice.
Tons of mouse alternatives exists - vertical mouse, trackball, touchpad, Contour roller mouse.
It is not a big challenge to master in alternative mouse for a person who committed to learn Colemak. ;)
Yeah, I've been using a tiling windowmanager, and know most keyboard shortcuts in the programs that I use most often, so it's not so bad for me, but I know quite a few people at work that have problem with their right hands because they didn't want to learn the shortcuts :)