Is there any reason to believe that a Targus stylus that works for iPad 1 will not work on iPad 2? I only ask because this one is 3x cheaper than this one (I think it's just because of added functions that I don't need). I would love to order one tonight since I'm going to Africa and would love to use my iPad as a journal as well as for a reader. Anyone using this one on their iPad 2? Thanks so much!