Wow, the belted plaid does look very cool—thanks for the links! But I think Ewen does wear a kilt (because I fondly remember how Keith is complaining to himself about these awful Highlanders with their kilts and then he sees Ewen in one and immediately goes, hmm, maybe kilts aren't such a bad idea after all. I love him).

And the Cameron tartan does seem to be a particularly good one, although I realise the whole clan tartans thing is a bit of an anachronism for this period. I have just found this one which is described as 'ancient', however, so perhaps Ewen would have been wearing something like that.

*nods seriously* Oh yes, very important to get a historically accurate lack of pants in there.