In reply to keokoe:
I'm just giving you a bump as I've been looking at them as well, I've had my eye on a second-hand Crux AK37, but was wondering if the Firecrest might be a little more versatile and user friendly (though probably less durable).
I especially like the looks of the side zip and as you mentioned the hydration vest type shoulder straps.
I think Outside stock them now, if you're nearby?