The tank-less water heater is, best case, useless when using the water pump... worst case, dangerous (we've met 3 people in campgrounds that have been burned when the water pump cycled).
Dealers we've talked to do a brisk business in replacing them, and sometimes Jayco will pay.
The tank-less may work in a campground, but why pay for the electric, and then use your own gas... doesn't make sense to me.
2016 Redhawk 26XD
Me, Dear Wife,
2 Bluetick Hounds
1 Newfoundland / Black Lab Mix
1 Cairn Terrier