When I enquired about coverage they were all in. They were happy to take my money. But I knew to ask about some mild off-road trail riding. When I mentioned that the conversation was over immediately. American Collectors wouldn't cover me period.
Like you said BW, they don't bring it up. I'm sure it's in the fine print that is seldom read. But if you were to need real coverage at some point they could possibly come back on you if it was offroaded. I think especially if you have an online presence with your Jeep maybe they could find that out.