Well, since they are new nad have a decent tread to them they work all right unless I hit ice. On my other bike, wich is and will be my snow and slush commuter, I am running Nokian studded tyres. Those are rather heavy but can cope with almost everything except very deep wet snow. I have ridden to work, around 10km either way, through blizzards and snowstorms and the biggest problem is when you hit ice with a side-wind.
Magnus Thor
Iceland