What I learned in Texas. I got regular Class C licensed at DPS Livingston, Tx. DPS says I need the Class A exempt CDL, "Any combination of vehicles with a GCWR OF 26,001 or more, provided the GVWR of the vehicle or vehicles being towed exceeds 10,000 lbs." Because I have a GMC 3500HD DRW with GCWR 30,500 and a Bighorn 3575EL with GVWR 16,000 lbs, I fit the rqmt. I took the written test today and do the driving tomorrow. They could not have been any nicer and said the driving test is really simple. The upgrade to Class A costs $11. The DPS person said lots of people don't know or ignore the rqmt. Then it's a problem if they get stopped or worse, have an accident. Take it for what it's worth.
So here's the follow on. I took the driving test today. It involved backing in straight line maybe 40 feet or so, then pulling on to the street, couple lane changes, on to the highway, off the highway, through some side streets with several turns to both directions and back to the DPS office. Parallel parking is no longer required according to the examiner. I inferred the big no-no is hitting the curb on right hand turns. She checks to make sure you are checking. All in all, the test could not have been a whole lot easier. Unlike CA, you don't have to go to the commercial driver testing facility. The folks were very cordial and accommodating. Note that this office is in Livingston, Texas where Escapees Headquarters is. Both the Tax Assessor (vehicle registration) and the DPS (DL) knew all about Escapees, RVs, etc. I can tell you from personal experience, this is WAY EASIER than CA was.
FYI, my total CA annual registration for truck and fiver were about $1700. And while it decreases, it doesn't do so quickly. And Mr. Brown is going to up these costs too. In TX for both, I paid $443 and $180 of that was for first time registration in TX. Insurance is higher here, about twice as expensive as CA was.