No experience with that situation, but ive got a class c cdl with passenger endorsement. It's easy to get the license, though the physical every year is a pain in the rear.
Just get the cdl, avoid the hassle.
My D.O.T. physical is good for 2 years in AZ. Class A CDL.
I am not a truck driver, only a diesel mechanic. I need it to test drive trucks. I do not fill out a log book, not enough miles driven yearly to do so.