I have roughly 5,000 miles on these tires over the course of 5 months, on all road types (excluding gravel). I love them.
I drive extremely aggressively and they are the best tires I've put on my Camaro to date, far better than the factory Pirelli's. More grip both lateral and in a straight line, much better in wet/cold conditions, tough and resistant to road debris, and extremely affordable compared to other tire brand options.
In cold/wet/ice conditions the tires have not failed me. Granted I do not live in a northern cold weather climate, so I cannot say for extreme snow or ice. However in heavy rain/cold weather they have done excellent.
Obviously there are more grippy tires out there, but you begin to sacrifice treadwear/all weather performance. To me these tires keep the best all weather performance, while remaining grippy enough in the dry to have plenty of fun and without destroying your wallet like a Michelin PSS would.
Overall I highly recommend these for a daily driven vehicle. I've put 95,000 hard miles on my Camaro, and these have been my favorite daily tire hands down, over P Zero's, Hankook V12's, and the old Firestone Indy 500's. I love them, I only wish they made a 315 width for 20 wheels!