My personal thoughts are that it's more show piece than anything else. I don't think it offers anything that any decent case couldn't offer in terms of function, and it's more open to accidental damage of components and you can't put anything on top of it.
In any case, I don't have anything against it, I just don't see it taking over from more practical designs.
[Edit] Plus, have you seen the price? It's priced for high-end features, but it's definitely not a high-end case (beyond having a completely unique style).