With the exception of Director Shockwave you never want to see the terms "web" and "3D" together in the same sentance. It invariably means either a glorified tabbed browser or Adobe Atmosphere rip (which is what this seems to be).
Yeah, I've used it a bit more and it appears to be a painful way of browsing the Internet.
At the moment the two main problems are that it is far too slow (loading a new page takes at least a minute) and it only displays the pages correctly if they have been set up to work with the 3D.
Somehow I don't think IE was designed for this kind of treatment.