I just recieved one of thesein black yesterday and I started using it today. It's obviously not a messenger bag but it's pretty comfortable worn with one strap (it has two), and most importantly, it's HUGE! The price keeps changing, I got it for $28 with free shipping with some other stuff, but $32 is still a good deal, if you're into crafting a little bit. I'm going to add some padding to the strap and probably change out the hardware so I can have a quick release.
Just a heads up to anyone interested.