Mine just sits in a bag from a sports shop, well I was given mine at a conference, and either goes in the main backpack in it or over my shoulder separately when shooting. I'm usually carrying a 5x4 as well and a TLR, plus another type of camera

Can't describe the bag easily it's just thin with drw-strings, I have two.

My wife would like me to buy a proper camera backpack but after 30 odd years I'm happier with a normal one, rather plainer thatn yours Gavin

Ian