I got this from a site I follow: Technomadia.com
They have a skoolie & use this company.
They appear RV (and possibly skoolie friendly)
I didn't check them out as I already have insurance but thought to post here for anyone still looking.
Epic Insurance: Offering Home, Auto, Business, Health, Life and RV Insurance
They have a RV blog section too on this site:
Let us know if this company is a viable source.