Oh, and which jumping do you think would give me carpal tunnel?
Just learn to move your arm rather than your wrist as much as you can, you should be fine then if avoiding carpal tunnel is your goal. It's pretty helpful in the long run. I eventually had to turn my sense down because higher sens movement is normally really wrist focused, more flicks of your wrist than there are long, smooth slides.
RJ is definitely more demanding in terms of movement though, shit loads of flicks and sudden angle changes. Demo is much less, the movements are much more finite and in general is a lot more timing based, rather than super exact angles.