I take the 5D, 35f/2 and the 70-200 f/4IS. Even went up Raineer.
If you don't want anything over 100mm, then how about the 5D, 35mmf/2 and the 85f/1.8? Or the Rebel with a 24f/2.8 and a 50mm f/2.5. When mounted to the camera, those lenses fit in a much smaller pouch than the 24-105.