While some have additional front pockets, most shoe bags do not--although you will find we include 2 gym pags with shoe compartments so you can note the differences and consider those on your search as well. The shoe bags on our list are designed to provide additional storage that can be used with your gymbag, backpack, or travel bag.
So, overall there are some with additional small pockets but having them (or not having them) doesn't take away from the function they provide.