I'm a gram weenie and I like to look at the payload-to-weight ratio of packs. A larger, simpler bag with fewer zips, closures and attachments appeals to me. So does lower cost. I'm willing to give up convenience and ease of access. I don't see the attraction of multiple small bags. My current set-up is just two Arkel Dry Lites on a rear rack, a few things on top of the rack as needed. Nothing on front or frame. If it doesn't fit, it doesn't come.