Fair enough, but they're still way out of most people's investment range as far as a pack - and probably more than a lot of people actually need (in my case, if I'm going to the backcountry, I'd just take a camera block and throw it into my actual backpacking backpack that I've h2oProofed and use that for now)
As far as the Tamrac Expedition, I've looked into it. It looks nice and all but I dislike the front opening. I kinda like the idea of the bag opening from the backplate like on the fstop bags and on the Sequence. Any reason for me NOT to like/prefer this setup?