Re: OK I guess I\'ll get a lockright for the front.... videos
Since if you've got your hubs unlocked and your transfer case in 2wd there is nothing moving you won't even notice the locker.
However, it is common practice where it snows a lot (like around here, 300" per season) to leave your hubs locked for extended periods of time and just run 4wd as needed.
This causes the axleshafts to rotate which in turn causes the front driveshaft to spin. The steering with the locker in the front is heavier than with an open differential. I'm not entirely sure why. Furthermore, if you turn full lock around a corner chances are the locker is going to engage and you'll feel and hear a "bang".
While running in 4wd with the hubs locked there is quite a bit of bind in the system unless it is really slippery out. For example, when I'm driving down the road when it is mildly slippery in 4wd I can have my steering wheel up to 3/8ths of a turn trying to fight the truck to keep it going straight. Then when it gets slippery and the bind is let loose the truck jerks in the direction you had the steering wheel pointed and you scare the people next to you because you suddenly lurched at them. Most people will tell you that if they've got front and rear lockers they can have their steering wheel turned 1/4 turn either direction and it has no bearing on where they go.
However, when it's really slippery out nothing beats that front locker. If you think a Talon TSi or Lancer Evolution launches hard, you've never been in a locked truck. I've been stuck in a snowbank (my own doing) and I got one front tire to contact the ground and it pulled me out. I was pretty far up in the snowbank with all four tires off the ground. I dug under the front of the truck until it dropped down and then let the locker in the front pull me out.
Running in 4wd with the hubs unlocked is a good way to ruin hubs.