I don't have this case, but I can see a potential issue with a vertical mount. This case only has a single vertical slot and most video cards require two slots. So you'd either have to cut a hole in the case, which may or may not be possible and in either case is not advisable, or you'll have to use a single slot card, which isn't going to impress anybody so that renders the point of vertical mounting it kind of moot. They do make kits that you can buy to mount a GPU vertically in almost any case, but they require you to cut out the PCI slot's horizontal braces.
For $10 that is an awesome though.