I actually put in the effort of relearning to type better on a non-QWERTY layout. I can comfortably type over 70 wpm, but it hasn't changed my development experience. Even during the period of relearning to type on the new layout I realized that I don't actually have enough volume of typing to quickly learn and had to do typing exercises daily to speed up the process.
I'm still glad I made the switch--typing is certainly smoother and I never get any sort of cramps or pains in my hands or wrists anymore.