Truck Camper magazine has an article about a family who attended the Overland Expo in a big Lance camper mounted on a Ford Superduty pickup. The story is light on technical details, but gives a sense of family camping in this sort of rig.
http://www.truckcampermagazine.com/hellwig-goes-to-yosemite,-ox12,-and-the-grand-canyon/
http://www.truckcampermagazine.com/hellwig-goes-to-yosemite,-ox12,-and-the-grand-canyon/