Most of the people I know who are both "Car Guys" and SUV drivers, absolutely insist upon calling their SUV a "Truck".
I think it makes them feel better about the whole Soccer-Mom stigma attaching to things like the Ford Explorer, and I tend not to call people on it as long as the vehicle in question is actually Truck-based.
I agree.
Not all SUVs are trucks. To me a truck has a body-on-frame design; most SUVs today are unibody construction with lightweight independent suspensions built for comfort, not hauling.