Chris,
That's very appealing. I'm tired of freezing my ass off in small tents on 20* nights. And now with kids, I could use something more spacious. Also, I'd be more tempted to take off during the winter with a setup like that.
Lastly, the family vehicles are a Hyundai car and a Suzuki XL7. We've talked about getting a small popup we could yank behind the 'zuki, but with the impending move we can't justify the money. I could easily yank a small utility trailer loaded with gear and a wall tent, though.
I guess I oughta get it down to brass tacks and start in on the war department.