- Real Name
I do have a bit of an issue with these sling-type bags... All the ones I have looked at are designed for right-handers...
Maxpedition makes a Gearslinger line of excellent sling bags, and they make left-hander versions denoted by the "S-Type" designation. Not specifically designed for cameras but I've used a couple Maxpedition bags quite effectively with appropriate inserts. For example the Sitka is a nice size for a full mirrorless kit and has plenty of organization options: