Not to mention they don't even fucking fit in off-road situations half the time. Unless you're in a wide open field or have giant cleared roads (in which case why do you need an ultimate off-road machineTM), most off-road situations in the eastern US are going to involve trees. Try driving around trees in that thing and you'll be stuck in a matter of minutes.
For all the actual off road work I've done, the best vehicle has always been those little utility off-road vehicles (we call them mules or gators but I'm sure they have a real name) or just a regular-sized pickup truck with 4 wheel drive and low gears.