Sammyboy, I have an Ortlieb Shuttle which is a great travel suitcase and uses the same mount as your Office Bag 2. Do you leave your mount permanently affixed or only attach it for special trips? I don't have reason to use the Shuttle that often so I tend just to attach the mount for those trips since my bare rack is useful for so many other things that I do on a daily basis. I'm not sure how easy it would be to attach my rear basket, panniers, random bags, etc. on the back with the mount in the way.