Best way to attach Gordy's camera strap onto RX-1?

Did I order the wrong Gordy camera strap? I got the string one (not the O-ring one) but it seems so flimsy. I worry that eventually the string will wear out. Does anyone know more about these? Should I have ordered the O-Ring version where the leather loops around the O-ring?

I'm particularly commenting about the area in the detailed image that I'm attaching. Eventually, won't the metal wear out the string?