Bag In A Bag With ONA
Here's an idea that has been kicking around for the past few years by various bag makers - you might find it extremely useful.
Bag in a bag - or an organiser that you put into another container is a concept that Crumpler do very well - though their Haven pouches tend to look like manic loaves of bread and taken up a lot of suitcase space.
This specially-made ONA Roma organiser is designed without a lot of flaps and zips - these use up a lot of useful area - and the main flap is cleverly held shut with powerful miniature magnets.
The leather straps at the end make for easy lifting and shifting without having to fight your way around a strap. Maximum storage with minimum fuss.
Also fair bit of style but then who looks inside your camera bag?