If you can find a diesel stove at a price you can stomach, awesome, do it. It would be amazing not to have to fill up anything outside of the vehicle fuel tank. Safer and far more convenient than having to find propane filling stations.Our van also has a diesel house heater, but no hot water. Might add that later? But we're not living full time so maybe not. Good point regarding single-purpose fuel sources, plus propane just "feels" less safe. I'll do a little digging on the diesel options. Also would consider electric induction, if something exists that can be run with the current (or slightly modified/expanded) battery situation.
Oh Jesus fuck Christ that's real money.
Speaking as someone who had a full, 20 lb bottle of propane empty itself into the inside of our camper.