I've done something similar with Cybersyncs. To fire my camera and flashes using Cybersyncs, I...


1) Attached a CSRB receiver to a motor cord which was attached to the camera's remote port (much like the one you linked to, except I purchased mine from FlashZebra).


2) Set a CST trigger to the same channel as the CSRB receiver connected to the camera. This was handheld and used to fire the camera.


3) Set another CST to a different channel and placed it in the camera's hotshoe.


4) Set the CSRB receivers connected to my flashes to the same channel as the CST transmitter placed in the camera's hotshoe.


I believe I could have used another CSRB receiver set to relay mode (using the same channel as the CSRB connected to the camear) to trip the shutter. However, I had two CST transmitters, so it was just easier to do it with them.


Result?