Well, I've seen one used before mounted on a wall next to a wall mounted LCD TV. The only thing that looked odd was the small cable from the picture frame antenna to the TV. Other than the cable, it was a pretty slick way to remove clutter around the TV.
lol. Now really, a vase? If they could get the antenna to perform just as well as any other top rated indoor antenna, then they'd have a winner, but notice how they never talk about the technical aspects of how well an antenna like that works? It's so gimmicky.