Along with Monster Hunter Vendetta, there came another package with the Kindle case I ordered (instead of that Oberon one). It's made for the Kindle 2, so it's a bit big, but since I was just looking for something to keep it from breaking in half if I threw it in a backpack, this will work fine. And it was $10 off amazon.
So there you have it. The end to that ordeal. Unless Magpul decides to make a real Tactical Kindle Case, with rails for book lights and injection molded grips. I would spring for that.