I'll just say: you can definitely practice enough with any kind of keyboard switches and get your muscle memory up to a point where the clicky feedback doesn't really give much of a benefit. Surely when it comes to raw speed, the tactile feedback is negligible. But I'm sure it has a large impact on typing fatigue. I've noticed with the choc switches that my fingers are much less tired after work. There is very little travel. And the ergonomics of a column-staggered split keyboard are amazing.