A high priced solution pushed VERY HARD by high pressure sellers as a problematical solution to a doubtful problem. I've run over 250,000 RV miles on 3 Class A's and a Class C and have never had a flat on a front tire, let alone a blowout. I take care of my tires.
Check with your local tire shops and see how many know what these are, and more importantly, how many can do anything on a road call with them installed.
Take care of your tires, inspect frequently, and study the Michelin video.
The guys selling this junk are simply selling FEAR. Let the buyer beware.