Being in the sign industry, I know a little bit about this stuff. We don't do them, but I have a friend the runs a smaller shop that specializes in vehicle wraps. I printed the wrap for my hood and he applied it for me.
We make this stuff by printing the graphics on 3M vinyl with a large format inkjet printer that uses UV solvent ink, meaning it can stand up to outdoor use. Then the printed vinyl has a clear overlaminate applied over the top. The camo wraps you are talking about are done the same way. 3M vinyl really is the best stuff for this type of thing.
I have talked with someone that applied one of these camo wraps for a customer and they said the quality is pretty good.
I will say that applying is not an easy or short task. My friend that does this for a living often keeps the vehicles for a couple of days to fully apply the entire wrap. I know he doesn't work on them for that entire time, but it still involves a lot of labor.
Generally vehicle wraps aren't meant to be a long-term use type of thing. On average I'd say 3yrs, 5yrs max. They are relatively easy to remove and the paint underneath is going to be perfectly protected. I'm just not convinced they would stand up to the rigors of wheelin'. Obviously rock-rash is going to be just as detrimental to the wrap as it would be paint. I am rather curious how they would hold up to tree and brush scraping.
Just like painting, prep is the key. That means the vehicle paint finish needs to be in good condition. Most vehicle wrap failures are due to poor preperation.
Personally, I wouldn't recommend it for a couple of reasons. 1) It's going to be quite a chore to install if you plan to do it yourself, 2) I don't think the expense is worth the probable damage that will occur from trail damage.
I have considered just wrapping the top half of my truck because most of the body damage occurs below the body line, but even then I only consider it because it's really cheap for me to do it since I'm in the biz. I did the hood because if it ever receives serious damage I have a lot more to worry about than what the wrap cost me.
