I'd like to see some science on RSI. All i can find now is anecdotal evidence, and often does not make much sense (e.g. vi is better than emacs because emacs uses the hardly reachable control key, but in vi mode changes are just as hard)

I think this is very hard to research because it need a long time and people often change habits in that time.

that said, I hate apple keyboards. If there was a macbook air with a thinkpad keyboard (including trackpoint), replaceable accu and better linux support i'd pay 3k€ for that.