Indestructable... not quite
I now have three of these bags - a small red, an XL black and yellow. They certainly look the business, each (even small) loaded to 50lb, do not appear to stress the seams / handles etc. Rucksack straps very useful, can actually carry two at once this way, one on each shoulder.
Despite the rugged construction and appearance, the baggage handlers have still managed to beat up the two XL bags - one which has a small puncture on underneath (and multiple quite marked scuffs - after only two plane journeys)! I have two other 10 year plus in age, Eagle Creek cargo duffel bags which whilst not as cool to look at nor versatile to load, do not have any puncture marks etc... hence dropped point.
The puncture wound to the underside of my black duffel, could be I think due to bag having been thrown / slammed down on corner of pointed surface? Still, I assume this has happened to my other Eagle Creek bags in their much longer life span. There is a plastic liner, which has meant the contents couldn't spill out, though it means somehow I'll have to attempt a repair.... possibly with some Gorilla Duct tape?