For what it's worth, there's some feedback in this AVS thread that some of Motorola's HD-DVR boxes (used by Comcast) have what sounds like a design flaw that prevents them from getting an HDCP handshake with a display if there's a repeater in the signal path. It would be a major problem for HDMI v1.1 receivers and processors, but it may even be a problem for HDMI and DVI switches such as the Gefen boxes and Outlaw's 990, 970, and 1070.

Have any Motorola HD-DVR users around here tried using the DVI switching in a 1070/970 or 990?