I love it too
just got new studded Hakka's (Hakkapeliitta 2)
I've ran every kind of winter tire made & these are amazing, uber siped & studded right from the factory!
Tested'em in the snow & freezing rain both already. I'm slammed & start plowing at 4-5", am still unstoppable up to 12"+ of snow.
Looks like they make'em for Mt Bikes too
http://www.peterwhitecycles.com/studdedtires.asp