Can’t tell that much so far, because my stylus came DOA, waiting for a second one:
The screenprotector which came with the tbook 10 seems so be of low quality. The pen scratches it instantly. You can also see what techtablets is saying about that, in the stylus test youtube video on the yt-channel of techtables.
I think the original screen protector is more of a fingerprint magnet than the bare screen, or the screen is easier to wipe fingerprints of than the original screen protector.
When I get a working stylus, I will probably look for a good quality screen protector, if this does not limit the stylus function.
I read in other post’s (or was it the first look tbook 10 on this website), that the glass is not gorilla-quality. My very few trials with my not working stylus, did not leave any scratches. But I think, when you heavily write the metal pen tip will leave its scratches.