Bill,
Another thing I have considered but have not acted on was putting a high pressure port somewhere on the out side of the camper where a hose could be run to it. Just using copper line to feed the port, it would have to come off before the regulator probably a tee of some sort.  This would avoid having to use an overly long rubber LP hose, they are notorious for UV damage. The Coleman upper end campers have an outside LP hook up for the "high pressure" stove. I was figuring something like that but un-regulated for the Buddy Heater. So many ideas but no time.
Aaron