Too much grip on clean dry pavement. Fine in a straight line, but turn the wheel and they try pretty hard to pull into the turn. I won't be riding one handed, and I'd guess that they'd be impossible for riding no hands, if I still had that skill.
I haven't tried them in the rain yet. My guess is that they'll be much better than the original knobbies on wet pavement.
Considerably less rolling resistance than the knobbies I took off, due in part to 30psi instead of 20psi.
Not nearly as noisy as the knobbies, but still noisier than I expected.
Easy to install.