I've had 'em for about 8K miles and just got back from a 2K mile trip through CA, NV, UT and AZ that included snow, ice, dirt, sand and plenty of highway and they performed beautifully.
They rarely lose grip (VSC kicked in for a total of about 10 seconds on the entire trip, once on ice and once in sand) and are just about as smooth and quiet as any road tire I've ever used. I was worried that they'd be noisier than the stock 'flops but they have not been. They also track much better than my old Dunlops on paved roads.