Yes, short of super-gluing it in place, there's no fool proof, absolute way of not losing that little tool, Kevin. Historically I've lost only one (very old design that pre-dates the modern all-plastic bit by 20 years) and never bothered to replace it. In any case, the friction-lock washers securing the leg lock mechanisms which this tool is usually on stand-by for rarely come lose even with heavy use; I think it's something Manfrotto addressed some years back after photographers were finding legs went all a-wonky from lost (or worse, corroded) nuts.