I figured someone would be offering such a cable sooner or later. It is not approved by RED, so use at your own risk. I don't see it speeding up transfers from the RED Drive as it doesn't saturate the FW800 bus as it is anyway. But this is just another connectivity option that could prove useful. Perhaps it will speed up transfers from the RED RAM as it's a bit faster and comes close to saturating the FW800 bus on offloads.
Last time I checked, warranties on RED media were only 90 days anyway. ...Just sayin'