This comment is purely speculation, but based on the description of some of the pop's revealed and on Funko's blog page, some items seem to be hinted at convention exclusive. This doesn't mean they will be, and this doesn't mean others not mentioned along the same lines won't be, but it's interesting to note.

The following funko items are mentioned to be > exclusively/only at ECCC! * Pop! Funko: Spastik Plastik – Green Pulpo * Pop! Funko: Freddy Funko – Teal Baseball Freddy * Pop! Animation: Care Bears – Flocked Good Luck Bear * Loungefly: Toy Story Camo Backpack & Pencil Case Set * Loungefly: Star Wars Backpack & Pencil Case Set

It makes sense for the Loungefly and limited pieces to be Con Exclusives, but it's interesting to see that Good Luck Bear might be a con exlcusive (with possibility of showing up at the HQ and/or Funko shop).