at first i used the bag to carry my gripped K20D, 12-24mm, 35mm, 50-135mm, 90mm, 70-300 and flash, but it got heavy and i've never used all of it on a single shoot.
i just switched the dividers around to turn it into a laptop + camera bag for school instead. if i don't have a laptop in it, that compartment can be used for quick and easy lens changing.
btw i keep a spare divider in the bag to stick on the front velcro if i need to silence it.
gripped K20D with 50mm on right, 50-135 on left, 12-24 in middle, mbp 13" at the back.