Summary: To those reviewers that complained about not having enough room for additional lenses or a flash...read the description again. It says that it is designed for a DSLR and A lens. Did not say two lenses or a lens and a flash. This bag does exactly what is says it will do and it does it well. I love it!
Pros: Easily Accessible Equipment, Lightweight, Strong Construction, Well Padded
Summary: I ended up using the belt loops on the camera bag to attach it to a water bottle fanny pack. One of the water bottle holders is used to carry the telephoto lens. My guess is that the belt loops will not hold up. This has happened to me before and they seem cheap.
Pros: Easily Accessible Equipment, Keeps camera protected, Well Padded