Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Mine works alright. I've somehow managed to scratch my screen protector a little even though the stylus is either in my hands or in my sleeve zipper pocket.

It sometimes doesn't register when I write either. I probably won't be buying another one if I had to, I'd shop for something else.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.