B10 easy attach to the roller bag. The zippers are my biggest problem with the bag since the company's warranty does not cover the wear and tear that these things are exposed to.

I understand this part of the warranty, but some of the zippers are on the outer edges of the bag and when dragged behind a roller bag it is the first part of the bag to come in contact with what ever it hits. A poor design for how the zippers are exposed and no coverage since this is your fault.