A am also in the camp that has plugged many tires, never had a failure, and never even HEARD of anyone having a failure.
Ditto. The real danger is an immediate decompression of the tire, which would require the plug to blow out. Not only is it a real B***H to get that plug in, it's just as big a B***H to get out. And it would require tools, or perhaps, your tires to be inflated to like 200psi. I have never heard of, or had, a single failure from a plug. IMO, the biggest issue with plugs could be the balance of the tire.
So in truth a plug can leak, which is about the biggest issue I see with a plug. So with TPS you should be good to go.
Just my two cents worth.
If anyone changes their tires within the first 1000 miles because of a nail hole, for good measure, after having plugged it successfully, will you please send your old tires to me?