Good point geof, but whats the cost of keeping the second car on the road, plus the restriction of needing a garage unit with all that that intails? Guess it depends weither you intend to get somewhere and explore via the subaru, or change camp every few days.

Now my idea was to be able to use the 4x4 to leave the campground (to pick up the wife ect)when the white stuff starts falling, not to change campgrounds.

If you mean getting stuck in the mud on leaving a campground with the 5th wheel, well the 4x4 isn't going to hurt, but a winch would probably be the only thing that would help!