This isn't that relevant to me bit curious. Since I don't carry that much gear. We hear about Think Tank and how they are very nicely regarded. From the look of it they do look very nicely designed and thought out. If the airline says 8kg is the carry on limit whilst one could pack stuff more efficiently into various camera bags they are still gonna be overweight right? That aside, are these type of bags more for commuting and transit and then once you are in your hotel you switch to a smaller bag as the day is needed? Apart from big lens users I don't imagine on a daily basis most would be needing 2 bodies aand 5 lenses and a laptop to boot right .... Cheers.