Has anyone used this? http://justgosmart.squarespace.com/stylus/ There aren't many reviews on Amazon for it, and so I'm a little hesitant, but I'd really like something like this because it seems to be more accurate for writing on an app like Noteshelf. . . . The only thing is, it's similar to Adonit's Jot Pro, and that has a bad reputation for scratching up screens. http://www.amazon.com/Adonit-Dampen...r_dp_see_all_summary?ie=UTF8&showViewpoints=1 Does anyone have any experience with this?