Part of the problem is, it's hard to find a fight that does the following

1: Reliably inflicts a status ailment
2: Said status ailment being something you might want removed ASAP
3: Isn't fixed by a quick Esuna

The only one I've found where that MAY be the case is Miser's Mistress in Aurum Vale, where bad breath does a good job of 1 and 3, so a tank MAY want to use materia to help resist statuses they find annoying.