I did some quick research on the possibility of recording on the Nano3D recorder with the 7D. That would be nice. But it seems like we're all waiting on 'Magic Lantern' and "Syndicate" to come out with the hacks to record through the HDMI output.

I hope they crack it soon, perhaps thats the key to make the 7D's come alive for 3D shooting.

With the advent of 3D TV now, I would expect a lot of manufacturers to start building two cameras in one, where they would share the same power supply and sync. These current work around methods might get results today, but I'm hoping that later this year or early next that even Nikon and Cannon will offer stereoscopic cameras. Perhaps the cost of a single unit might even be cheaper than two 7Ds, and you won't have to jump through hoops to get it to work.

The Colorcode Lanc controller is great value for the money. It works well and will start the cameras in sync almost every time. It does look a little home made, but it does the job and is a lot cheaper than most of the others.