I have been having a really hard time finding a backpack that will hold my OMD with a couple of lenses and accessories. Most bags on the market cater to full DSLR's and have room for big lenses. When I find a bag I like it seems to have TOO much camera space in the bag that would never get filled with such a small camera...or I find a bag with good space but then can't fit anything else (I'd love it to fit my Macbook Air, headphones, book, and a few small things). I prefer it not to look too much like a camera bag but have good functionality. Anyone either have a slim, or smallER, bag they recommend or know of one that might fit the criteria? Any suggestion is welcomed. Again, I'm looking for a backpack and not a messenger style bag. Thanks!