All the cars I've ever owned, positraction would get me through almost anything and chains would get me through the other 1%.
But when I lived in a warm climate, I had a '63 Chevy van and the traction on that thing was so bad that, without a load, I used to burn rubber just trying to inch up my driveway.
Are pickups analogous - i.e. so light in the back that, unladen, they have poor enough traction that snow would be a problem even with posi?
Bottom Line: Does anybody drive their pickup in snow with only positraction and not regret it?