I have several Tamrac Aria series camera bags in different colours and sizes:
tamrac | Aria Series
I originally got an Aria 3 for my Sony NEX. It is large enough to hold the camera body plus attached lens plus spare lens and a couple of small accessories. The outside back pocket (no closure) holds a map, small booklet or my Nexux tablet. There are two outside pockets on either end that are large enough for smart phones, an outside front pocket for small camera bits (e.g., extra memory cards) and a zip inside pocket for a skinny wallet.
With one of the Aria 3 dividers removed, the bag is large enough for my K3 with lens attached plus another small lens - and assorted small bits and bobs. And yet the bag is still pretty small and sleek.
I have an Aria 6 for when I want to carry more gear, or when I'm taking my camera to work and need a brief-type bag (the outside pocket is large enough for a skinny folder.
For your Q, you might find the Aria 2 is large enough, or you might like the convenience of the slightly larger Aria 3.
Stylewise, it tilts a little bit toward the feminine side but my husband says he's not embarrassed to use it (except for the raspberry coloured Aria 3) ...