Like Geof says - Once you have a MH designation from a conversion-friendly state, you are grandfathered wherever you go. Just take your MH paperwork into your home state's DMV and they would recognize and register it as a MH - no questions asked. The problem is the initial registration in a conversion friendly jurisdiction. One must think creatively to do this in some cases.
I just picked up the recently revised SOP #T-270 for Alaska DMV. Good thing I titled my Volvo 770 conversion last September. While the required (permanently installed) life support systems have not changed, two notes have been inserted which state:
1. Regular Sleeper Cabs - Cannot be converted to motorhomes.
2. A truck-tractor pulling a commercial trailer cannot be classed as a motorhome. The trailer can be classed as a travel trailer.
This raises several interesting questions: What is a "regular sleeper cab?" and what is not? Apparently truck tractors pulling non-commercial trailers can be classed as motorhomes. Apparently commercial trailers can be classed as travel trailers.
I fully intend to pull my 44' (formerly commercial - now non-commercial) step deck Landoll sliding axle trailer behind my Volvo 77o motorhome. I plan to treat it just like any other private cargo trailer.
I have posted more discussion on this topic at the Escapees MDT forum, here, if interested in reading more.
http://escapees.infopop.cc/eve/ubb.x...6776#773106776