For example, Dvorak layout helped me with wrist pains. I didn't lose ability to type on QWERTY after the transition, it's just less convenient to me now. That a

For example, Dvorak layout helped me with wrist pains. I didn't lose ability to type on QWERTY after the transition, it's just less convenient to me now. That applies to all non-customized systems - they are are just less convenient, and that's about it. I don't see any problem with using whatever pleases you (even if those are very obscure tools), if with transition you don't lose ability to use less convenient (but common) tools on occasion. And you usually don't lose that.