As I understand, DishWire is not a full implemenmtation of the IEEE1394 standard. It is only accessable for a transfer of hard drive content dump to the DVHS recognized VCR. I was told that the Dishwire would NOT allow DVHS playback from the VCR. Meaning that as of this date, only the JVC design that included an encoder for Component analog playback. The tapes you decide to record from the the 921's hard drive would be playable only via hookup of the VCR by component to your monitor, not through the Dishwire on the 921. In a true 1394 implementation, this would be a bi-directional and the 921 would receive DVHS signal for playback.
In my conversation with the Eldon engineer I was told that the above was the very reason that the Mitsubishi DVHS VCR was a problem to implement because the VCR had no way to connect for playback as the 921 ishwire design would not permit this. Therefore if the MIts DVHS VCR were to have control implemented in the 921, your system would require some other way, such as the Mitsubishi monitor with Firewire VCR connection for playback. It was said that they were talking to Mitsubishi about this.
What about the future? My own guess is that some day, E* may decide to develop a full hard drive 1394 networking with their dishwire portal. This would permit a network of daisy chained external hard drives you could add as desired to the 921 for near limitless hours of record and storage.
In case any of you are not familiar with 1394 networking, this is the slickest way to add as many hard drives as you need. In windows, it seems to be limited to the number of drive letters you can assign. I have closed to two terrabytes in my video edit suite now using 160G and 200G hard drives.
Connection and removal is as slick as greased lightning. All E* needs to do is modify their software to allow full 1394 networking with 5C and then Who needs DVHS? All your archives would be in juke box style, on demand and no tapes on the shelf.