TheFishGuy used one of those to hold his fish from the 800 during the renovation. I would feel better with the metal framed pools. They are also cheap (the 10'x30" model is $130) and they hold themselves up during water changes. My friend had one of the easy set pools and when you drain it (for waterchanges) it falls and collapses. I could imagine this would be painfully annoying during waterchanges.
The metal framed ones are the way to go, and are just as cheap.
I am looking into getting one of these for natives and such so I wanna see pictures of how yours comes out.