I went through, this song and dance in the State of Texas as well. The dealer and even a Texas State Trooper told me I didn't need anything special to drive my class A. I looked into it further to be sure, and after numerous conversations with the Texas Department of Transportation, I discovered that because the class A weighs over 26,000 lbs, I indeed needed a Class B non commercial license. There was both a written and driving test that did include the air brakes.
My biggest fear for those Driving around without it is, when there is an accident, the insurance company will say DENIED DUE TO BEING NOT PROPERLY LICENSED DRIVER...
Just my 2 cents
