I started using a dactyl manuform about two months ago and now I can't imagine typo on anything else. I'm already planning on order a second one for the office, assuming we ever return to it.
These keyboards look interesting but how does "space" work on it and how long did it take you to learn the non-qwerty parts of the layout (like space, hyphen, brackets, and tilde)?
That being said, it took me about 3-4 weeks to get used to the keyboard to the point where I wasn't frustrated all the time and about 2 months to get back to my regular typing speed. One big benefit - I was developing carpal tunnel and about 6 weeks after switching to the dactyl, all pain was gone.