Welcome Maui,
That is a very interesting idea.
I think I'm in the same camp as Mr Sunshine: RV's in general are made for the warmer months and climates. Most people either store them during the winter, or drive them south.
Granted its a bit extreme but you may want to browse this thread:
http://www.thorforums.com/forums/f17...her-14187.html
(extreme in that they mention camping in -20F, not 20F...that sign makes all the difference ! LOL)