In response to arguments that broach the question of haecceitism in a limited domain, useful debate requires us to distinguish the scope of different versions of haecceitism and the distinctive motivations of domain-specific (anti-)haecceitisms. Naturally, one might accept certain kinds of haecceitistic differences while rejecting others. Moreover, almost any haecceitist will reject at least some putative haecceitistic differences. For example, while one might accept possibilities according to which two twins swap qualitative roles, one might deny that you and Obama could swap their respective roles. In addition, even those who accept these haecceitistic differences regarding humans will likely deny that you might have swapped qualitative roles with your singleton set or some other mathematical entity. The question that arises for those unswayed by blanket arguments against haecceitism is to determine which putative haecceitistic differences between possibilities are to be admitted. It is, however, no small matter to adequately characterize the scope of haecceitistic differences one admits. For, while a ban on haecceitistic differences regarding certain ontological categories (e.g., spatial regions) is easy enough to state, nuanced views that accept only certain kinds of haecceitistic differences concerning material objects are challenging to plausibly or definitively formulate. In this way, characterizing this or that view as committed to haecceitism simpliciter can prove unhelpful without a specification of the precise haecceitistic differences admitted.