I just stumbled across a small company called Head On Tactical that is making a variety of pouches, bags and carriers for all of your tactical needs. They have a bunch of cool looking products in MultiCam, A-TACS, plus the more “pedestrian” coyote, black and Ranger green.
One of the products I think is really innovative is the Vessel Pursuit Shotgun Pouch they developed with the guys at MARSEC4. The pouch compactly holds 24 shotgun shells and divides them up with color-coded pulls to more easily distinguish between two different rounds like slugs and buckshot.