I've got a Tamron 200-500 that is about 9 inches in length. I love it but it's a monster and few of my camera bags will hold it. What camera bag would be a good choice for a Canon 7D with a shorter lens mounted and carrying the Tamron? All I'd be carrying is the two lenses, the camera and some peripherals. (I know. I should carry a tripod, too but oh, how I hate carrying a tripod. I usually lean against a tree, against a fence, car door, whatever.