Something like this?
I just found out by taking my cameras out that both the Olympus 35RC (I think the RD is the same) and the Canonet QL17 GIII have the PC connector on its side. So no hot shoe adapter is not necessary.
What is the Metz brick at the side? That seems not compact friendly
Something like that, but what I'd try is the flash in one hand and camera in the other. Atleast that's what I saw and seemed very cool