I switched to them from 5:10's and while I only used them for the first time last weekend I'm very impressed too.
I like the fact that they have a thinner sole than a 5:10 so I can actually feel the pedal, rather than having to look down to make sure my 5:10's were actually on the pedal!
If the Vibram sole is less grippy than Stealth rubber it's not by much, because both seem to stick to my pedals like glue.
As for the styling, they're obviously going to divide opinion but I reckon they look better in reality than they do in the pictures and their performance more than makes up for any cosmetic deficiencies!