Talking with Arkel they say the 20L Rollpacker won't work with my Domane, guessing because of the D shape seatpost. But the Seatpacker should be fine.
That leaves the front pack. I go back n forth between what I want, second guessing myself. Im waiting to hear from Arkel that the front rollpacker will work. I like the look of the burrito bag though, but worry about 4.5L being enough.
sigh lol