I ran a tensioner once with a double-roller chain, after 25k miles the chain had worn grooves into the tensioner pad and I'd bet with another 20k miles or less it would have worn all the way through to the steel which would have been no bueno. IMO they're only intended to be used with stock-style link chains with a flat back side, not double rollers where the links protrude radially from the rollers. But plenty of others seem to have run them with no issues soo...