It's really different depending on your personal skill level to talk them into it and know what to say and what to omit. Also depends on the agent you speak to. All insurance companies minus Progressive will cover some skoolies. Progressive will if you do a full commercial policy but not an RV Policy, they will accept and then reject it after underwriting occurs.
Most will or won't do it. Again, depends on who you get and what mood they are in.
If you are an insurer reading this, please provide legitimate ways for us skoolie owners to enter in the market. You're loosing out on opportunities here.