For my two cents on the snow question. Snow and lockers go hand in hand in most cases. When they don't is when you factor in ice. Then they are not cool! You are better off with open diffs on ice. This is the reason I chose to go the ARB route. I go skiing several times a year in the winter and like to take my truck. Since some of the driving is on ice and some on snow, the ARBs give me the option of choosing what driveline I want to run. The locker comes in handy when I hit the unmaintained roads to go cross-country skiing or snowshoeing. Otherwise I leave them open.