Who carries around a DSLR, is likely to have little room for other accessories, but who needs already have a mirror in his camera;) Right now I have most of my camera with lens and an extra lens, a flash and small items such as cables, filters and Reinigungskram therein. (Again for emphasis. These are mirrorless lenses - which are usually slightly smaller than a DSLR with the same sensor size)
What I'm missing something, is another separating element to sort all the stuff a bit, and the design is not the most beautiful. Not quite the ideal is that the length adjustment of the harness over time gives something ... Not much, but every few days I push the length but right again. This makes a total a star deduction, but these points would be really a problem, I had the bag after two and a half years, not more.