Plasti-dip is a cool way to paint a vehicle, because if you get tired of it, you can just peel it off and start over with a different color.
I have never done it myself but I wheel with a few that have it. And from what I have seen with those guys is that the plasti-dip doesn't hold up very well when it comes to a tree branch scrape or almost anything else touching it, it's almost kind of fragile when it comes to anything brushing past it. And in a short period of time the paint job is looking like crap again.
It isn't designed to be put to the test of taking it off-road. Just a thought before you go and spend $200-$300 for enough plastic dip to cover the entire outside of the Jeep.
It normally sells for between $8-$12/can, and it will take about 12-14 cans per coat X 2 coats for even coverage. I did my paint job with Dupli-Color Engine Enamel. Took me about 14 cans to do a coat, but it sprays on a little thicker than the plasti-dip does.
'87 YJ, 4.2L built and bored, 8.5" of lift, 8.8 rear, AX15/NP 231, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...