Has anyone ordered or installed the invisible shield for the Zaggmate that Zagg is selling on their website? Its very expensive at $34 and probably should have been included with a keyboard case that costs $100 already. I see there are two different types, one that covers the bottom and the other that provides full body protection. I like the Zaggmate, however, the finish around the edges is a little rough and it appears to be a scratch magnet on the bottom. I've already got several scratches on it and I'm very careful with how I use it.