Do you have experience with any of the SOFT S&S cases? I am planning to buy one, with the intention of folding the case and take it with me on the tour on the rear rack as I will fly in and out from different places. I read a few forum posts about the experiences with S&S backpack case and would be interested hearing from other people who used any of these but especially some of the other options out there, i.e the Co-Motion Co-Pilot or the OurCase Airport Ninja or any other case available. My bike will be a Thorn Nomad with 26" wheels and Rohloff rear hub (no freewheel), medium size (virtual seat tube: 56cm ~ 22", actual seat tube C-C: 42cm ~ 17")