I agree with Benz2369 , I have a "stock" Jimny with dual ARB airlockers fitted.
I still have the standard tyres and want to wear them out before buying new rubber.
I also do a lot of touring and the Air lockers give you the little bit extra confidence you can get out of trouble when your by yourself.
Found them excellent on a loose gravel/stone climb that had stopped me previously, also with no antilock brakes a descent can be better controlled as a dab of brake in 1st Lo. wont lock a wheel.
Have only had them (front and rear) fitted for a few months now still finding out what the setup is capable of.
Did use the ARB high capacity compressor, and carried out install myself.
Did not use ARB switches they are oversized and ugly
Did use "Narva"? switches from Autobarn with internal LED indication as you do not need to tap into wiring for swithch illumination.
Did purchase ARB tyre inflation kit for compressor (worth every dollar)
