Bobbed trucks will not go nearly as well as a 6x6. Weight will make a big diffrence. Lockers are great in the rear only with weight. ... [Lockers] will steer funny up front if you drive on the road alot unless you get a set of front lockout hubs.
i'm going to have to disagree with you on all counts.
1. "Bobbed trucks will not go nearly as well as a 6x6." - the original question is about lockers in a 4x4. so if you had 4wd, it begs to say that you would go farther than a stock deuce with only 3wd. obviously, that's not apples/apples. so if you put lockers in a stock deuce, i'd argue that you'd never steer it with the large amount of weight and driving wheels in the rear.
2. "Weight will make a big diffrence." - weight only makes the suspension work more and is a crutch for suspensions that do not have adequate articulation. also, you need less articulation out of a suspension with a shorter wheelbase.
3. "[Lockers] will steer funny up front if you drive on the road alot unless you get a set of front lockout hubs." - i often leave my front hubs locked and have never even noticed any steering input from the front locker; hi-way, around town, parking lots, etc. i only realize the front is still locked when i get out to lock the hubs to find that they already were!
to the OP, i'd offer this input: you can put Ouverson lockers in front and rear for the price of one ARB unit.
edit: also, it's pretty easy to drive the truck to never make any noise or have under-steer in turns with a locker in the rear. it really isn't that difficult... took me about 15 minutes of driving to figure that out.