Would echo everything GritDog said. Particular emphasis:
- A good set of chains is cheaper than a tow call;
- The throttle does indeed have uses other than dead stop or wide open. Can't tell you how many people in Ewe-stun seem to instantly forget that on the very very rare instances of snow; a feather touch on the foot feed will often let one get through spots (or get started) when a heavy foot will just lead to spinning;
- Siping is good; when allowed, I like studs better for use on polished and wet ice, but siping is good;
- Not exactly a towing issue, but as many accidents during the snow months are due to loss of steering control (i.e. sliding) as due to lack of traction......traction tires on front (including in real bad cases, chains) are a good thing, whether 2WD or 4WD;
- 4WD doesn't stop any faster than 2WD....but in some cases, one can go slower with 4WD and not lose traction than one would be able to go in 2WD, hence being able to stop sooner
- Practice makes, if not perfect, competent.
Having spent the better part of a decade in my younger days traveling extensively with 2WD, I still prefer the pushbutton convenience of 4WD.....of course, it was better when it was "shiftlever" convenience.....