Generally easy to use, but has weird quirks
PROS: I'm totally on board with swiping across the keyboard to add spaces, punctuation, capital letters, backspaces etc. rather than having dedicated keys for them. Even if it's been an adjustment learning the key placement, I've found the swipes to be really intuitive. I haven't been using it long enough to say whether it's more efficient than QWERTY as a whole, but I can see how the setup makes as much, if not more, sense than QWERTY.
CONS: I've been pretty disappointed with the autocorrect. I can't tell if it's specific to me or standard across users, but there are all these weird things that are automatecally changed for reasons beyond me. For instance, "your" is autocorrecting to "our," and "so" is autocorrecting to "maybe." Some words with ' in them also get changed when I've typed them correctly. This is especially problematic given that I tend to look more at the keyboard than at what I've typed since I'm still learning. I've turned off the autocorrect feature for now, but if you do so you lose the suggestion bar, which handilly also allows you to scroll between words. So I'm going to see how it goes without, and keep an eye out for future updates to the autocorrect feature.
OVERALL: I would recommend if you're in the market for a KALQ keyboard…IF you wouldn't be easily irritated by the quirks I mentioned.