I've been using RideOn for years, more than 10. I have had excellent results, it seals punctures, hydro-dynamically balances the tire and seals the tire so the pressure stays about the same for a long period.
Also, because of the above the tires give me more mileage before I replace them, maybe 4K more.
It sealed a puncture when I was at Willow Springs race track, coming back from breakfast in Tehachapi we were doing over 100 and as we returned to the track a racer said to me, "he your tire is low" and the rear tire had a puncture but didn't go flat. Probably saved my life.
I have never had a tire place refuse to change my tire, I tell them that I have RideOn in the tire and for them it is no biggie.