Yes, the OP needs to learn the difference between a spool and a locker, they're not the same as posted above.
The automatic locker, like all lunchbox lockers are, is pretty invisible in the front in 2wd. You won't feel anything but you can hear some slight chattering around real tight turns. You'll notice a locker in the rear much more, but it's still just fine and worth the better off road performance. If most of your wheeling is on steep wet or loose climbs, then a rear only locker is probably preferred over a front only locker. But, if you're wheeling is over rocks and roots and obstacle type stuff then a front only locker usually works better. If I could only run one, front or rear, I'd always run only front. One of my rigs is spooled in front with an air locker in the rear, and I rarely lock the rear. You always have the option of applying a little hand brake in the rear, which is easier than modulating the brake pedal to get an open front to hook up.
I'd gladly wheel front only against anyone rear only. :cheers: