Clement was my favourite at home and in the shop. I never had or knew of one that failed, but I know it can happen. You needed to be like Merckx and dump water on your tires as you descended!
When I was at the US Olympic Training Center in about 1989, they used a 3M product which I think was used for automotive trim--- somethingbond. It did fail more than once and the one time I was able to see the tubi afterward the adhesive had failed cleanly, staying with the tire but none of it remained on the rim.
"So what makes this protest different is that you're set to die, Bobby?"
--May well come to that.
"You start a hunger strike to protest for what you believe in. You don't start already determined to die or am I missing somethin' here?"
-- It's in their hands. Our message is clear. They're seeing our determination.