@Harry: Those are the 'hard' tips. The soft ones are made of felt
@Manday: Honestly? I don't know what technology they use. All my knowledge of pen technology comes from this opening post:
http://forum.tabletpcreview.com/thre...com-aes.65666/
Even so, a screen protector wouldn't interfere too much.
Touchscreens work by either completing or ending a current flow through the touch of your finger/stylus.
A thin film of plastic isn't resistive enough to start interfering. But again, I don't know what technology the RP-1 uses.
It's entirely possible that they picked POM to lessen scratches on the screen (i've read about Wacom screens superficially scratching because of the Nylon tips), but the astronomical price of the replacement tips and the S-1 tips being Nylon, makes me feel of something more malicious with the RP-1
Especially since I never heard of people complaining about Wacom styli and their hardness.