I disagree with this. Trunk bags (even without a quick release) aren't always a PITA to get on and off. I have both the big Performance bag and the big JANDD bag. Both have a Velcro attachment in each corner while many other brands have two straps that have to be threaded under the rack. Easy peasy. Both can be expanded to hold extra cargo. Think expandable briefcase or expandable luggage. The Performance bag is most likely very similar to the Nashbar bag. Quite frankly, I kind of like the Performance bag better even though it was more than half the price of the JANDD because it's stiffer at the top and easier to zip. JANDD will probably last longer though.