FWIW, using one will void any Campagnolo warranty on your chain, cassette, chainrings, RD and FD - in fact any part that the link comes into contact with.
If the chain is going to fail anywhere, it'll be the missing link. Chain failures, if catastrophic, which they often are, usually take out other components. Shimano have the same rule, for the same reason. Better to rivet / re-rivet and peen correctly, on the appropriate link.