Good point. And since I tow nearly all the time when I have the camper, stability is a more important factor I need to keep in mind.
Ah yes.... and I remember the first trip I took with the camper (truck broke 2000 miles on the ODO that trip.) Price, UT south on HWY 6 to I-70... major cross wind. Truck handled it superbly, other than having to counter steer into the wind. STABLE!!
For a truck camper
plus a trailer I would definately stay with the dually. You can satisify the shiny new truck syndrome with a new dually.