Originally Posted by
PatrickGSR94
I've been using the Topeak bag with expandable panniers for 2 years now (currently on its 3rd season, year round commuting) and I love the ease and versatility of the system. Sure the panniers are fairly small compared to other "real" panniers, but it serves my needs just fine. Being able to fold the panniers closed, and slide the trunk bag off one bike and onto the rack of another bike in just a couple of seconds is a huge plus for me.
I have to say it's probably just as easy for me to take off my panniers to put onto another bike, as well. Just pull up to unhook the top, then unhook the bungee at the bottom. I've used a trunk bag, and I've never like having the weight that high up over the rear wheel. If it's a light day, like today, I'll even ride with just 1 pannier. Do what works for you. Topeak makes some good stuff. I don't really like proprietary parts and components.