The problem is with Calgary roads is that more often than not you need ice tires more than snow tires. I find that all seasons & snow tires sometimes perform roughly the same on the Calgary dry ice.
My tires are for mud and snow.. not bad, but those sticky blizzaks would be pretty awesome at times you would think. I almost wish there was a spray or something you could put on your tires to mimic the Blizzak technology. There, I said it! Somebody get rich now!