It is a great tire for a city driver or when you have no choice but to brave an impending snow storm on the highway. But ice will kill it as it has very little resistance to ice and light snow/slush. Slush, though, is the worst for this tire. The sipes get packed really quickly and you lose a great deal of your traction.
So, it really is a tire that is designed for a specific purpose. When used for that purpose, it's pretty great but with the exceptionally poor treadwear and high cost, it's not on my list for future purchases. There are much better bangs for buck out there.