To me, the wireless USB hubs are pretty compelling, in that I could set the hub up on a desk, and dock my iPhone, iPod, external hard drive, etc, and access it from elsewhere in the apartment, without having to drag around a mess of cables and things with my laptop. The wikipedia article even mentions how there's a chip for laptop integration, meaning future laptops may have it built in, and not require the dongle I would need with my current machine.
I really do hope the solution takes off - I'm not ready to pay close to $200 for the convenience this would provide, but I could see paying half of that . . .