Yeah, if you really need to be able to type fast you are not going to be happy with changing layouts. Imagine you had to learn how to type all over again, that's what it feels like. If you can live with that, you may find it's worth it, your fingers will become way less stressed. I used to have real pain from my job with computers, but with the setup I described it no longer causes me any issues at all. It really has been a good change.