UM, yeah, But I bet a lot of people have never seen it and it is a simple solution if you are trying to carry something don't want to use your pack for.
Like maybe if you are foraging along a beach and dont want stinking shellfish or urchin spines in with your laundry.
Or maybe if for some reason your pack is not where you are at the moment.

Anyway, they have taken it a bit further than the simple bindle-stiff's hanky on a stick.