Has anyone had any experience with the Mystery Ranch Blackjack pack? I'm really leaning towards this pack, even though it's the heaviest of the bunch. Mystery Ranch is known for making some of the most bombproof packs of any company out there, and I really like the fact that they are hand made in the USA. One of the main reasons I like the Blackjack is how customizable the fit is, and I've heard it carries incredibly well. That is what probably brings up the weight of the pack though. Another reason I'm liking it is it's versatility. It looks like it compresses very well for a 42L pack, and is large enough for longer trips. The airbag is also removable to give you a really nice backpacking pack for the summer. Anyway, has anyone had their hands on one?