I've looked at a few possibilities but I'm torn. I want something to carry some layers (warmers, jacket, possibly shoe covers), some small amounts of food, and possibly a small camera. I can't find anyone locally who has anything like these so I can't go try anything out with the gear I want to pack.
1. Detours High Tail - perfect internal capacity but the weight handling isn't great. That worries me. Bounce worries me as well with plastic adapter.
2. Topeak RX Carbon Beamrack and RX EX trunk bag - smaller internally but handles more than enough weight (15lbs). Could possibly go to the larger size bag with panniers and aluminum rack but that seems like more than what I want.