When I had to use the thing, I was getting carpal tunnel in both wrists but I ended up just giving up on the computer for a week and coming back when I felt better. Speech recognition just sucks.
But even when it's just one wrist flaring up, I make myself keep away because it's sooo tempting when you're typing one-handedly to just use your other hand for one little thing, which becomes maybe a few keys here and there, and before you know it you're typing normally anyway and just aggravating things. :P