I do have a commercial membership, and my understanding was that I can post ads and links like this as long as it's under the Bazaar section. I apologize if I misunderstood.
Yes I personally have had 2 of these straps on 2 different basses, and I can play for hours with them on. I had trouble finding them for sale so I decided to sell them in my store.
Mike at Bass Alien Shop at Bass Alien
now for great savings on basses, amps, strings, effects, and more!