Hi everybody,
i have RSI, too.
i feel compelled to toss my 0.02 into the ring. The following has greatly helped me:
1. if you haven't yet, Google "Ergonomics" and look at the images section. The shoulder / wrist / elbow orientation cannot be overlooked. the same thing applies to HOTAS - i can HOTAS forever with an ergonomic setup.
2. beware most ergonomic products. i've been able to create fixtures from blocks of wood, proper-height books, etc. i use a regular mouse, and prefer a 'real' ergonomic keyboard - one that lets your wrists approach the keyboard with little bend.
3. raising your monitor so the center is straight - ahead is beneficial all around. 'infinity' should occur with no tilt to your head, and gaze straight ahead. this is very helpful in 3-d games, too.
4. WATCH YOURSELF. take a snapshot of your behavior in the middle of something stressful. i've learned to keep a really light touch on anything - be it a keyboard, mouse, HOTAS, whatever. my friend with RSI has worn the tip of his stylus to a nub. i've figured how to 'float' a stylus above the pad so it never even touches the pad.
5. i've had my worst bouts with RSI at work during crunch time - and it had nothing to do with kbd / mouse. it had all to do with dealing with the stress of the project, which can work its way down from your brain, into your hands. our company sent us to "Stress School", and it has helped immensely. Basically, it's about constantly relaxing to keep stress from accumulating (which it does).
i can't "stress" #4 enough. snapshot yourself in situations, and attempt to immediately relax your grip (or you) if you discover yourself crushing your keys, or ripping the stick off its base. become the ICE MAN - nothing should be able to worry you
you can't beat the problem, but i've lived without symptoms for years. again, i stress no drugs necessary, nor exotic (overpriced) equipment.
always glad to talk more about this to anyone.
-Slick