For me it depends on the car and the specific tire in regards to the all weather versions. Some all weather are closer to an all season while others are on the edge of being a true snow & ice. For my Cayenne, I use all weather Vredestein Quatrac 5 and it seems to perform as well as any dedicated snow tire while providing decent performance on dry pavement. It goes through deep snow easily. Performance on ice (in parking lots) has been impressive going up and over snow mountains, but I think a lot of that is the very capable AWD system.
