Don't forget to consider the routing of a cable from your earpiece to the camera.
I plug in to the rear intercom sockets and have the camera in the back of the aircraft, or if it needs to be in the front, I use the pax sockets.
The prospect of a loose cable from my ear to the camera seems potentially awkward at best. Should you decide to try this, you may want to cable tie the mic lead to the headset lead to at least keep it tidy as far as the dash.