I second the request for dual display support. I have not recieved my EyeX yet, but I always work with dual displays, and I’m not sure if I could work without them without going insane.
One controller monitoring two displays would be nice, but I doubt that would work well, unless the displays were mounted side by side and completely parallel to one another, with the controller centered at the bottom. That way they would make one flat plane.
The next question is, would the controller be able to pick up gaze at the far ends?