Golly is usually only ever seen in the kilt when there is some special event taking place. I am not aware that it has ever been an 'everyday' garment for him.
What impresses me is that Golly wears a MacDonald tartan kilt, even though he is a Mackenzie, which shows that he is in service to the Laird. Just wish I could figure out what his badge is on his bonnet -- it's not a Mackenzie badge, and not a MacDonald either -- Hector wore the traditional MacDonald badge, but the badge depicted on the Flag in the first episodes and the web site looks more like a Forbes or Sempill badge.

Cheers,

T.