30L that is like the Aer CPP2 or Away Commuter Backpack? Need upright luggage passthrough and water bottle holders

Hi all! I just got both the CPP2 and the Away Commuter backback, and both are beautiful--but both seem too small for my needs--travel and going to the office with several thick books and a laptop and sweaters and lunch and things. I'm probably unrealistic in trying to find a backpack that I like both for work, and for a personal item that fits on a wheelie bag. I'm giving it one last chance before a trip in a week! Here's what I'm looking for: * two good water bottle holders, that hold a normal Owala securely. Would settle for one good pocket, but not the too-little ones or an interior one * upright luggage passthrough. I really considered the Northface Recon 30L, that had everything I wanted except for the passthrough. I realize it's not hard to add one, but it bugs me to have to tailor something new. * Must be all black, not with huge white logos and look somewhat professional (not super military or hiking) * Preference for not a clamshell, as I'll be using it a lot like a campus backpack most of the time. But would be okay with a clamshell that has easy access from the top. I don't love the rounded top of the Aer CPP, but that's not a big deal. * I don't care if it is too big for a personal item on discount airlines--or that it can't be packed completely full to fit the normal domestic carriers. * Thank you all for any other suggestions!