i have a heavy accordion that i have hauled around town in a bike cart, but otherwise i really wouldn't be able to take it anywhere except rubber tramp style. speaking as someone with back issues but a lot of that comes from carrying around too much in the first place. maybe an accordion backpack + travel light? i once almost dropped and smashed it hopping a fence drunk with just the accordion on my back (fortunately someone caught it + later i quit drinking)...heavy/expensive/fragile is just a terrible combo for road gear? trying finding another one you could carry in front w/o a case - i have a wonky/playable beater that is a bit lighter & was $20 off CL, or even like those plastic mexican-style kids' ones you can get for around the same. oh & if rubber tramping with a real accordion, remember theres usually beeswax on the reeds so don't leave it in a hot car or it could melt + be ruined