I got this inexpensive one from Spigen via Amazon:
http://www.amazon.com/Galaxy-Spigen...ag=hawk-future-20&ascsubtag=UUacUvbUpU4630651
I got the clear one so that it doesn't detract from the look of my Edge+. It covers the back and sides, but nothing on the front. It's minimal and doesn't really add much to the phone's thickness. If I dropped the phone and it hit the corners or back, I think it would be fine, but if I dropped it on the front screen, this wouldn't provide any protection. However, the lips above the corners might protect it a bit since it would prevent the screen from actually touching the surface if it was flat.
At any rate, I usually go naked on all of my phones. But with this one being so expensive and a bit harder to hold because of the edge, I thought a minimal case like this would be sufficient. However, I am a little interested in the clear s-view flip cover. I'd like to try it, but I'd like some feedback on it first. I had the regular s-view flip cover for my previous S6 (not the Edge, just the standard S6) and used it whenever I traveled.