I had this same question. Upon doing a little googling there are several sites that give histories and how they were worn. One way for work, another for hunting and formal dress. scottishtartans.org is an interesting site. One that I found and can’t find again -of course 🙁 said that the belted kilt, and rolling along the floor is probably not the way it was done in general. That there were loops were stitched inside the fabric and that rope was inserted (belt like) that the man could quickly gather and tie around himself. Rolling that much fabric in the floor would have been nearly impossible because the homes were extremely small. Terry, can you give us more insight??