I learned it well, switched to it completely, and it was great.
Except that it was absolutely horrible.
Not because of the layout, but: maybe it's just me, but I completely un-learned QWERTY.
Every time I had to touch someone else's computer, or a phone, or work with some kind of QWERTY embedded keyboard, it devolved into either immediately switching the layout, or looking like a clueless old person doing one finger typing while staring at the keyboard.