That "specially designed" bag happens to look more or less identical to a similarly "specially designed" bag I have for my (now ancient) Nikon E990 digicam. Except the Nikon version is tan coloured, and has a Nikon logo on the front.

They are very nice bags, though. The side pockets on the Nikon bag have a double set of zippers, allowing them to expand to nearly 2X their compact size when needed. The front pocket is quite generous, and the interior can be (velcro) partitioned to suit pretty much anything.

Cheers