An intriguing new class for PF2, which happens to explore a fair amount of the territory that the canonical Witch class does -- the cabalist has a familiar and serves 'mysterious entities that are well beyond anyone’s understanding'. It's a bit more focused than the Witch, exclusively an Occult caster where the Witch can partake of all four of the traditions, and whether either of those choices is a strength or a weakness is entirely subjective. On the whole, I think it offers enough of a different take that it could replace the Witch in campaigns with an Occult focus, like many horror-tinged settings, but I'm uncertain of the notion of allowing them both to exist in the same setting.