That KeysToGo one looks SWEET! If I didn't already have both the Ultrathin Mini and the Apple Wireless Keyboards, I would be all over that one. Heck, I might be anyway; waterproof and futureproof, since it will work with any iPad. Which is something to consider, for those who haven't settled on accessories yet. If you're a frequent upgrader, getting accessories that will work with your next device as well as your current one can be a big plus. I've found more than once that using the Mini with the Ultrathin's stand up groove puts keyboard and screen in a less than ideal position together for me. And if I'm going to carry around a separate stand to put the ipad where I want it (or use a cover with a built in stand), then why go with a hinged keyboard that might not work with my next iPad in a year or two in the first place?
Just something to think about. Anyway, I do wonder how the KeysToGo feels to type on. The Ultrathin I have is very comfortable for touch typing.
As far as vertical position with the Ultrathin: on the Mini version, vertical does work and does appear to use the magnets somehow, as the keyboard lifts as though attached when I pick up the iPad from the top. That said, it's definitely a little more top heavy and easy to tip over, and that makes me wonder how well the Air/Air 2 versions would do in that position. Hopefully someone can chime in on that.