Have never been a perfect, trained touch-typist - so there has been a learning curve, but it is worth it.
My wrists feel so much better, and I am almost back to full speed. (Previously, I would just use laptop KB's).
The only complaints... Not from me, but when I am on web meetings, I have to be on mute, because everyone finds the KB noise too loud when I am typing... Lastly, very expensive, but much like my Ergotron monitor arms, this will likely outlast generations of equipment it is currently used with.