In the Detroit area we don't get snow very often that shuts us down. The main roads are almost always passable. We use
Butler's and the weight of the equipment and water in the back actually helps us with better traction. In an average winter we will have 2-3 trucks need to be pulled out.. usually when we missed a customer's driveway because we couldn't see exactly where it was.
As Rich says though, ICE is a flat out nasty!! Give me a few inches of snow over ice any day, at least your tires have a little something to grip. Thankfully we don't get a lot of just ice here. The problem we run into is that people sometimes don't understand that just because you can go doesn't mean you can stop even in light snow. Lot's of 4 x 4 and ALL wheel drive people get in accidents because they speed around people and forget their braking distance is greatly increased..
The first few times you drive in the snow it's better to go slow and have people think of you as a sissy as opposed to going too fast and getting in an accident. Go to a local empty parking lot and practice there. Get a feel for what your vehicle can and can't do in the snow. I also do that anytime I get a new car so get a better sense of how it will handle. Make sure there is plenty of wide open space though as you may be surprised on how much you can slide.
Any thing that quickly changes your momentum is also something that needs to be avoided. Not hard braking, no rapid acceleration, not hard cornering, etc. Going up a hill, be real easy on the gas pedal. When coming to a stop, be prepared to stop way back and ease up to the stop. On ice, everything is magnified.
