It takes me about 3.5 to 4 mins per tyre with the arb compressor from 15 to 36psi.

More than often I'd rather drive to the first servo to air up. Just last weekend I drove from mt airlie to lithgo to air up. It isn't so bad cruising around on 15psi, just a little sluggish and the jk is a little more thirsty. I even disconnect the night before and re-connect at home as well

At least I know the arb air compressor is there if I really need it though.