While I generally agree with the "don't buy an RV to save money" and don't think of it as an asset advice, the OP is in a unique situation - different than most of us who sell the house and go travelling full time.
He's a forester, which likely means a freebie place to park (like workampers get). And if he's not going to be tied into a lease, like with an apartment, then if a job comes up in Atlanta and he's in Maine, there's no lease to break or buy out. (I sort of get the impression those guys travel alot).
There are alot of plusses in what he's talking about doing....as long as he doesn't let his pipes freeze and doesn't mind going broke in the winter from paying for propane.
Now, where's that guy who posted about his underwear getting frozen to his camper's wall? That guy could probably give the OP some good insights ;)
