I have one on my two 6-strings and my 12-string, but I recently decided I don't like attaching the strap that way anymore. I attached the straps that way because I though attaching the strap at the headstock interferred with a full barre Fmaj. Now I think that's a load of dookie. I've been finding that the guitars are off balance being attached at the heel of the neck. So I'm going back to using the Planet Waves quick release. Shoe strings are kind of tacky. Functional, but tacky.
What does this have to do with anything? Nothing. I never said it did.
Carry on.