I have tested a couple of the newer builds and it seems that Verizonguy's build is the only one with working USB. RNDIS/Bluetooth/IRDA are not options for people working in secure environments where such things are disabled by network policy or physically removed/disconnected.
I just want to make sure that the team working on the kitchen is aware of this issue and the fact that Verizonguy managed to fix it.
Thanks!