Board Thread:Off Topic/@comment-26397825-20150712053515/@comment-26397825-20150712055127

It's not so much the fact that he's holding a sword on his back - it's the specific sword. The katana's length and curvature make it too long to effectively pull from a back holster unless you have a specially made scabbard to hold it - and even then the scabbard most often damages the blade whilst it's being drawn.