I use my shower every morning that I'm camping. It's the primary reason for owning the camper IMHO.
Propane use is a non-issue. It takes less than one 20lb tank for an entire season worth of camping. I run the fridge on propane, and only light the water heater when I'm going to take a shower. 10 minutes, and the water is the perfect temperature for a nice hot shower.
Gray tank use is also a non-issue. With the right technique, you can have a satisfying long hot shower using less than 2 gallons of water. I can't make 5 gallons of gray water on a 4-day trip from the shower.
I don't have either of these campers, I am just saying that it is possible to use your own facilities and be happy with the results.
