Do they market "ride on" as safe for tube-type tires? Some people do mount tubeless on their airheads with great success, but the wheels aren't really designed to hold a tubeless tire. I have my suspicions it wouldn't be good because you wouldn't want to stick the tube to the inside of the tire with that tacky goo. Also, is it safe with natural rubber? Many folks like to run natural rubber tubes because they don't blow out like butyl rubber.
From what I've heard of those products, they can stop a leak (after some pressure loss), but they also make a heck of a mess inside the wheel, adding time and frustration to the next tire change.