I bought this totally out of curiosity.
The actual quality of the item is fine. It's well made, sturdy and all that. However, the "shelf" bit is just too small! Well, unless you've got a washboard figure that is. Don't get me wrong, I'm not some obesely round fat man either, I'd say I was of "normal" (whatever that is) build, and the shelf is just too small to balance a guitar onto it.
Now, shelf size aside, there's the other issue of guitar placement... Now I don't know about you but I don't usually play the guitar at 45 degrees to my body with the apex pinned at my hip, but this is what position you're forced to use when using this gadget - if you can manage to get your guitar to stay on the thing, that is.
Seems to me like it's trying to solve a problem that was never there...