Well I popped down to my Louis Vuitton store today to have a look, a few hours after I posted my last post.
They come in a pack of three, individually and beautifully boxed within similarly absolutely gorgeous packaging, a bigger collective box. I had a quick look at the cards (but they were sealed in plastic so I couldn't handle them). They're bridge sized cards, plastic, with golden gilded corners. The faces look stunning, I really liked the faces. Nice, simple and elegant with the brown as a continuing theme for the faces. I was a little disappointed with the backs though. Compared to the faces and the packaging, they're not incredibly elegant or impressive in my opinion. The backs come in three colours, one for each deck, red, blue and yellow, and from memory they go all the way to the edge of the card (but I may be wrong on this last point).
I don't know about feel but I'd speculate that while they would be a lot better than the usual brand of plastic cards made in china, they still wouldn't have anything on Bikes or anything - they'd be hard to flourish with, though not impossible to perform magic with, if you were so inclined, at least while they were new. Nonetheless they're probably best as a card collector's deck, and best used for games like poker.
So yeah. If the backs were a little simpler and more elegant, I'd consider getting a box, but as it is, I probably won't. It'd be a nice little piece for collectors though, definitely. As far as quality goes, I can only speculate - while they're not made for magicians, they'll still be above average quality for plastic playing cards, though being bridge sized is definitely a hindrance.