I didn't think about it much till now, but here I go:
I have a 'proper' stylus too, but I never use it. The ball is too big, and it seems rough on the straightedges. The neat thing about a rounded conical point on a scribe is you can change the radius of the tip by changing the angle of the scribe. On thick, spongy paper I want a big wide indentation, so I practically lay the scribe on the paper when I use it. When I scribe thin, stiff paper, then I want a small precise indentation. I angle the scribe much higher. Image is looking the scribe head-on in the two situations I described.
I'm not saying this is the best way to do it, it just works well for me.