The dual electric/propane water heater wasn't offered on our 2011 model. Not that it matters as it takes so little propane to heat and maintain six gallons of water that using electricity, even if it's from the campground, isn't going to save much. Mrs T likes to use the on-board shower when we're camping but I use the bath house facilities, having already paid for them. Sure, not all bath houses are great but if they're not good I can always revert to Mrs T's private shower room! Please note that we're not boondockers, nor are we likely to be given that we like our luxuries.
We do use a small portable electric cooking ring, though, rather than the propane powered range; that saves a little. It's only tripped the fuse once and that was when the AC and the microwave was running as well.