Riverman - that's all well and good for some people. I chose to do my own conversion so that I get the vehicle I like with the layout I want, not what some manufacturer thinks the public wants. I have only the parts that I need and want and none of the other stuff.
Once one has the insurance and title figured out, life goes on without any bumps! In some cases it's easy peasy, others not so much. Getting full-time RV insurance is just about as problematic, depending on which insurance company you ask.
Stated value insurance is not prohibitive in cost - you pay for what you want and need to insure the vehicle. Here my RV coverage is about 40% cheaper than it would have been to leave the vehicle titled and insured as a passenger vehicle. AND the vehicle is insured for enough to cover all the work done on it and all the parts I put in it - no questions asked except to chalk it all up. I've seen nightmare situations with insurance companies when there's damage to an RV, the same with cars.
All insurance costs vary by jurisdiction and by location of the 'home' address of the vehicle. Having a vehicle titled in a major metropolitan area will cost more than the same vehicle insurance in a outlying area.