I've been looking hard for a vertical iPad bag with a shoulder strap. I want one that is as compact as possible, with no extra pockets, etc. I want to be able to use it under a coat or jacket, a simple pocket under my armpit that I can pull my iPad from. The best I've found so far is the black Simplism outdoor case, I think, but it's currently not available anywhere. Why is this so hard? anyone have any suggestions?