Interesting paintings. I'm particularly struck by "The Champion"'s weapon. It appears to be a strange cross between a broadsword and a cavalry saber. I'm sure that a frugal and adaptive people like the highlanders would be able to find a use for a 'misplaced' saber, but it's not the first think that comes to mind.

I wonder if this was a bit of dramatic license on the part of the artist? If so, might not the tartan also be fancified?