Is there an aftermarket USB->DockConnector cable that works with an iPhone 4 + bumper case? I'm looking for a third-party (i.e., cheaper) alternative to the Apple Dock Connector to USB Cable that is compatible with an iPhone 4 w/ bumper case. I've tried a few third-party cables and none of them are able to connect properly with the bumper case installed on the phone.

Also, I'd prefer it if the dock connector end of the cable doesn't have the press-to-disconnect buttons.
Maybe this'll work: http://cablejive.com/istubz

EDIT:
Whoops, maybe not. The 1st party cables are a precision molded plastic that is thinner than the 3rd-party clones as detailed in this video @ 3:40 - 

http://youtube.com/watch?v=XpmLvY2XNPg