I have my 19' Nomad travel trailer set up as what you could call a bugout shelter. I think of it more as a shelter in place. If my house is destroyed/damaged then I have an insulated shelter with propane furnace, stove, fridge, and sanitation facilities. It's parked about 50' from my house and stocked with 2 weeks worth of food, water, and assorted camping supplies. If I need to move it takes about 10 minutes to hook up behind the truck.
Regards, Vince