My wife needs a smear-proof black ink for calligraphy. The pens are medium to very broad: an M400 Mottishaw crisp italic M and Pilot Parallels. The paper is greeting cards -- good quality but not quite as smooth as Clairfontaine and a bit more absorbent.
The property she is looking for is resistance to smearing after it has dried if a hand drags across the page. The hand may be somewhat sweaty.
The smear-proofness of acrylic ink in a dip pen is excellent but FPs are much more convenient. And dip pens are unpleasant to use while FPs are joyful and Parallels transcendental.