Reply to CDJ2000 HID mode on a hub?

So I heard a nasty rumor that CDJ2000's will not work in HID mode with traktor over a usb hub.

Does anyone know if this is true?


What about the sound card in the DJM900? I know it's never a good idea to use a sound card over a hub, but would it work?

What kind of difference in latency would you end up with?