A side benefit with having onboard 120V power and 2 batteries is the truck doubles as backup power.
I wired 3 Xantrax automatic transfer switches into 3 circuits in my main house box (Kitchen, living room, furnace).
I'm able to run the: furnace, fridge, lights, ceiling fan, TV, and charge phones/laptops all at once.
The inverter was registering a 70A 12V DC load at the peak, so I can power the house for an hour of continuous draw before having to start the truck and recharge the batteries. (They will recharge in 30-40 minutes)
The high load devices run a 33% duty cycle, so that pushes the time for the truck off to 3 hours.