[decal]

Well, you've undoubtedly seen pix of medieval pipers with the bag under the right arm. There's no problem playing in place that way, but I wouldn't want to march doing that ;)

[sionnsar]

Actually there are much more recent (pre-1745) paintings of pipers playing right-handed sets. I am told (emph.) that the MacCrimmons played left-handed, so that became the standard of the College of Piping during the post-1745 ban.

But I agree -- marching with a right-hand set in a left-hand band could be, um, exciting.

[Redleg Duke]

It ain't bad...just be on the right flank of your rank! :-)