I looked at a ton of bag solutions for my Icon before I remembered I had a gigantic U-shaped combo tailbag / saddlebags thing that I used to run on my BMW. It fits fine on the Icon, so I'll likely hold off on new bags.
Used them for the first time today, rode into work and between the two, they fit everything I needed to bring. No backpack needed! I can take some size photos with contents if anyone is considering these but has no way to see them in person, please just post here, I think it tags me when there are new posts.