I have a similar protector to that orzley, black rim too, but sports a different brand.
It's what it you think, glass surface, covers the front of the phone, leaves just enough for a case. The only problem or non problem depending on how you look at it, is if you line up the home button with the top speaker and front camera, then it partially covers up the navigation buttons, and completely covers up the notification LED. I typically have these turned off anyway, but it bothers me a little that the cutouts aren't exact. If someone can tell me they are, then I'll buy me some as well.