There are laws of accountability. In the end of the day it's on you, the operator. Get educated and research your interests. The salesman isn't going to be there when things go bad.
As for me we had the opposite experience. As soon as we said 5th wheel they all asked about the truck. Of course once you say dually it was game on.
*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS