Not the beat the dead horse, but Grundy's langauge is not much different. They say : "Collector vehicles must be used for show, hobby, and pleasure purposes only" and "This policy authorizes unlimited hobby use of your collector vehicle in collector activities, exhibits and parades. While participating in these events, owners are free to enjoy their collector vehicle without monitoring the odometer." What if you are not at these 'events'? I think they are both saying (and do say) that this insurance coverage is not for your daily driver, but there are no mileage limitations for non daily-driver usage.
When I first called Hagerty, I had just gotten the DMV to sign off on my ride and I needed to leave that day to get with the Hot Rod PowerTour. I told them this and I just sent them some info, a few pics and they gave me a free 30 day rider so I could leave immediately. They told me to have a blast. No concerns over my agreed value or anything. I'm sure Grundy is the same way.
I would like to hear some more experiences with individuals that have had claims with these companies. That is the true test...the rest is just cheap talk. I'd much rather pay a little more now and know that when I have a claim, someone will take me seriously and take care of it. I don't use the cheapest car or home insurance for the same reason.