Actually, the interface between the positive and negative index regions can be used for viewing. See the attached video in my original post.

In reply to this comment by hatsix:
^ The camera is for viewing the outside world, as it would be impossible to see anything inside the cloaked area (if light bends around your eyes to make you invisible, then it can't go into your eyes so that you can see).
A camera would allow for wide angle, recording, and infrared viewing, vs. looking out with your own eyes.