Earlier quoted context omitted.
Most are horrible. One of the reasons is overlap. Your hands do occasionally hit keys on the other side. You want a pair of 2/3 keyboards, rather than 1/2 keyboards. You /especially/ want a lot of the "special" keys on both sides. Another is key action. You want proper mechanical keys. A third is mounting. That's a problem which hasn't really been figured out. The middle hinge or fixed setup is definitely sub-ideal.…
I was told by one friend that they made it really hard to use a normal keyboard effectively after a few years. Did you find that?
I don‘t mind it. 99% of my time spent typing happens at my own desk(s) and the few times I use someone else’s keyboard don‘t justify compromising on comfort with my own setup.
A big part of what makes it hard for me to use a normal keyboard now, isn‘t so much the physical shape, but the programmability and additional modifier keys offered by the UHK, both of which I use a lot.