This is how I’ve taken to carrying my little NEX-6 now, rather than a neck strap or wrist strap:
A neck strap just got in the way too much. A wrist strap just means I have to pack the camera away into pocket or back when I want to put it down for a moment. This can attach to my belt loops, or to a neck strap, at a moment’s notice. It doesn’t take up much pocket space. It doesn’t get tangled up.
Also, it looks a bit ridiculous. I like that.