Sunny, all electric coaches have been out for a while. Our first coach (2008 Dynasty) we had it built to be all electric. The reason I wanted all electric is that we only had to worry about one fuel source (diesel).
We rented previously and needed to return the coach with all full fuel tanks (Diesel and Propane). Not all fuel stations carry propane and it was a pain in the butt trying to find a place. That cured me right there on worrying about propane.
We had a diesel fired furnace/hot water (Aqua-Hot) and a diesel generator. If we were boondocking, I needed to run the genny a couple of hours in the morning (during breakfast) and a couple of hours during the evening (dinner)..... very easy to maintain the 8 house batteries that we had.
Our new coach is set up in a similar fashion except we have Lithium Ion technology (3 Li house batteries) with four 3,500 watt inverters. When boondocking, it's the same procedure, a couple of hours in the morning and a couple of hours during the evening.
MM.