Wow, shame that tony beal have cranked their prices, this is good stuff. It used to come rolled on a card tube as well, no need for fannying about with staples or anything...
I've used mine in anger for 8 or so months now, for lots of events as well as studio work, so I've shot thousands of shots on it.
You will always need a very sturdy grip setup for vinyl, it really is heavy stuff. I use two heavy duty calumet (ie rebadged manfrotto) stands and the manfrotto telescopic backdrop pole.
My key complaint was a verrry slight sag that I experienced in the middle of the vinyl - absolute non issue for shooting white, but made knocking it to grey an issue, and the tones that you got if you did just weren't quite the same as the lush grey of paper - maybe doesn't make technical sense, but you can see it.
Could fix the sag by replacing the card tube with a scaffolding pole or something I guess, wasn't a massive issue, you'd just sometimes get 'V' lines down the sides a tiiiiny bit - a bit of gaff tape to the light stands usually sorted it.
The vinyl itself is thicker than the stuff that lastolite will relieve you of £200 for a roll of...