Just in case we didn't have enough bags (I'm talking about myself here). My standard bag is the Lowepro Compuday 250 backpack. I can fit a couple mu-43 cameras in the side-accessible pocket. The rest of the bag holds stuff (mostly kid stuff), and can hold up to a 15" laptop. I have a Thinktank Mirrorless Mover 5 for when I'm just out with my LX-100, and I'm thinking of getting a Mirrorless Mover 10 for my EM-5 II with slightly larger lenses. I don't have a more formal/messenger style bag, and this one looks excellent and very well thought out: I've got a couple of Peak Design capture clips and the wrist strap / sling system and really like their stuff. This bag is on kickstarter now. I have no affiliation, but just been happy with their products.