I kinda miss my Isuzu Trooper when its snowy.
1. the torque on demand put a bit of delay between the rear breaking loose and the front locking up. 4wd donuts.
2. the winter button made the transmission start in 3rd. take it easy and never break loose.
For me, I dont use 4wd in the snow. I prefer the feel of when Im breaking loose and know when to back off. If Im having issue taking off, then grab 4wd.
Like others said, 4wd will get you going, but you gotta stop. give yourself an extra couple cars lengths to get stopped. ABS will activate, just watch for 4 wheel sliding. ABS can be fooled by all four tires stopped.