I know these were pretty broadly criticized upon their initial release due to the lack of structure. Since then they have released the omni sheet which supposedly helps. I've had a chance to handle one at a local shop and I feel like there's some kinda charming about it. I like the old school klettersack sort of look but with the side pockets that fold out to get access. I like how well it appears the 500d admin pocket integrates into the front. Only obvious thing to dislike is the price of course, but hey its only money. The thing about money is, you can always make more! Anyways just curious if anyone has used one long term that has any input. It's wierd, you basically NEVER see these for sale used, so I get the feeling the folks that use them, hang onto them. Cheers!