RED had talked about and had posted a render of a product they called Supergrip that fell off the radar some time ago.
In thinking about EPIC in HH config I think this might be a perfect match to work with Canon, Nikon and, when available, RED Electronic lenses.
A handle mount remote FIZ, start/stop, and some RED special features (no doubt), it seems like logical accessory for RED to make available to use not only with EPIC, but more importantly Scarlet.
And for the ultimate in elegant engineering solutions, make it REDmote compatible, complete with user programmable buttons, custom FIZ speeds. I see incredible utility and powerful control of the camera this way!