Switchable IS the only way to go in a 2wd very light pickup.
If you put in a locker that is locked all the time, your wet road conditions will be just short of hell on wheel.
While taking a corner and if you happen to apply power and the wheels happen to break loose, the back end of the truck will start to come around. With an open diff one wheel is static going forward so if the other wheel starts to spin then you don’t have the situation as if both wheels are spinning where there is no friction on the road and the back end starts to move.
The switchable locker, ARB and Ox Locker, are more money, yes but IMHO safer to drive.
4x4, 5sp, Std Cab, Stepside, E4 Red
4” Lift - Coil-Overs, 6” SkyJacker Leafs - No Blocks (Mistake)
31 Spline FX4 Rear Axle, 4.56s and OX Locker, Hurst Shifter w/Optional Stick and "Made by Grev" alignment adapter