Contrary to some of the previous messages, if you are going to load heavy with a camper the front locker is actually much more important to take the pressure of your drive line and other components. I've seen a few twisted drive shafts on heavy rigs on some pretty basic obstacles. If you're going light it's less important. Less weight, exponentially less pressure on your driveline components, rev her up and get over the obstacle. With a 3k camper on back, less so. Momentum is not your friend.
Case in point, saw a fellow twist an axle on a dirt road after he pulled over for lunch. Rear wheel rolled over a 13" boulder with a divot behind it in reverse. $3k tow to Moab. Wheel was stuck. He tried to power out and turned his drive shaft. If you're loading just basic camping equipment you'll probably be fine without the front locker.