You might try calling Mesa RV and/or Camping World in Arizona and talk to someone in sales with your question.
They are the experts.
I was RV shopping at the Camping World RV sales and they attempted to explain to me how I could save money by doing what you are questioning.
I ended up purchasing a truck camper which does not require registration in Arizona (it's considered "cargo", not a vehicle there). That's another story, better left alone.
At any rate, they do have a "scheme" which is lawfully compliant and can save some money according to them.