Well, i just got mine this month. I've worn it a couple of times and i have to say it's comfortable, dries quickly, and binds better than a regular bathing suit. No where near as powerful as a tri-top or other regular binder, but better than nothing. I think if they put another layer of binding in there, it would be near as good as some regular binders.
I'm trying to get photos to compare bathing suit with the binder, but it's hard. I'm not very photogenic! If i get photos, i'll post them.