Comments about Domke Domke F-5XA Small Shoulder / Belt Camera Bag, Canvas, Olive:
One of the best things about this bag is that it doesn't obviously look like a camera bag. That may or may not decrease the risk of theft. If you have a fairly simple setup, it's great--portable, durable, and protective, all in a manageable size. If you have more equipment, however, it would be too small.