Yeah, that proprietary cable is my least favorite thing about the 604. I have the travel docking station (with power and USB/USB OTG ports), and I basically have to carry that wherever I go, because it's easier to carry that adapter and rely on having a miniUSB cable available than it is to carry the proprietary cable around. Basically you have to carry one or the other.

Anyway, I'd like to hear your impressions of the device. I have the 604 Wifi and I'm a pretty big fan.