Also, you must keep in mind the people in cold weather climates that get frequent snow and Ice. I wouldn't have anything but a selectable locker in the front of my rig (if I could afford it). 4WD works great with an OPEN diff on icey snowy conditions on the road, it gives that little added stability but doesn't affect the steering. A LOCKER up front is brutal to drive with on snowy road ways in 4X4 it almost feels more unsecure because of the potential for understeer and such. With a selectable you get the best of both worlds.
I guess i don't understand this statement.....
A 2 LOW kit will completely disco the front end, No power transfer to the front axle. With a Selectable when you have it "unlocked" you are still acting as it is in 4X4 but with an open differential rather than a locker, so it would be a totally different thing.