Best options are probably from RedOxx (airboss and mini bosss) and Tom Bihn (tristar and western flyer). I can do 2 nights plus gear in just the western flyer. I don't believe any of them have a pass through section though so you would need a hook or bungee to attached to your roller. The TB options are also convertibles so you can use them as a backpack or shoulder carry.
I'd suggest you check the sites and I know tom bihn has a forum with plenty of discussions on the topic and pics.