Test confirms my findings.
http://m.youtube.com/watch?v=LFJI0tLMVpI#

And that one doesn't even have the locker. I ran 2wd with the locker engaged and was amazed. I had to find really steep hills to need 4wd. Tried the hill descent and It seems like the shift assist that holds the vehicle on a steep grade is automatic? Because on steep hills I could stop, shit to reverse and the truck wouldn't roll forward when going from brake to gas.
I found neighborhoods that no cars had ventured in or out of and had zero problems even driving slow, stopping, and starting just to make it more difficult. I had a lot of time on my hands to screw around while my neighbors F350 on 37's had to back down the hill numerous times after he couldn't get up only to fail and take a couple of tries to get out the easier way.
Deep snow would be another story but for 90% of my snow driving this makes anything else I've ever driven obsolete.