Looking into Immersion Blender attachments

[u/Glittering-West-6347]

Hi, I'm planning to get an immersion blender and I had a few questions:

1. Is the whip function useful at all? What do you all use it for?

(I already have an electric mixer and a stand mixer for baking)

1. Is the food processor that comes with the KitchenAid/Braun models worth it? Can I use it to make humus or dips? Or would it be better to get a dedicated food processor?

(I have a Magic Bullet that I use for grinding spices and making pastes)