I also bought it and used it about 4 or 5 unavoidable swimming times, so just to add my experience of it:
Comfort-wise, the top-part is not great, as harlee says, it sticks to your skin and is tight around the stomach. The pants-part is comfortable but I felt that it was also too tight-fitting not to pack, so maybe not the best solution for somebody who doesn't want to pack.
I think my chest was somewhere between a size B and a C when I wore the swimwear and I definitely couldn't wear the binder-part on its own, but with my underworks tri-top underneath it was perfect and I didn't have to re-adjust it while swimming.
Looks-wise, it worked great, I was very pleased with it! I think it looks a bit like a sportswear, athletic type of swimsuit. Once I also saw a group of rather elderly men who wore almost the exact same type of swimming suit, so I think it would be quite discreet socially. And it got me into a swimming-pool where they strictly forbid t-shirts and swimming shorts.
So I'd say it does work, especially for smaller-chested people, but depending on where you're swimming, I'd still say the regular binder+t-shirt option would probably be more comfortable.
Whether you decide to buy it or not, Happy swimming!
