Noted: McRostie. :-) I'll keep my eyes open for that name on any of the sporrans I'll see. I wasn't really planning on buying a new day sporran, but their products look indeed nice, I'll keep them in mind when I've worn out my cheap ones! :-)
Indeed I have some vintage shops in the West End/Byres Road area on my list, although I'll be passing by some of the kilt shops in the centre (MacGregor MacDuff, Hector Russell Kiltmaker, Geoffrey Taylor) to see if they have some nice ex-hire stuff (mainly for jackets). "Mr. Ben" in the centre has kilts listed as something they have, so I guess they might have sporrans as well.
The only kilt jacket I currently own, I found at Armstrong's in Edinburgh, they indeed have a nice rack of highlandwear in each of their stores! I'm not planning a day trip to Edinburgh however, so I hope to find some similar shops in Glasgow.
Loch Lomond Antiques is a bit far for something that's not even a sure hit, but maybe I can combine it with a distillery visit nearby? :-)

BTW Is a closure as pictured here a sign of quality, or just a sign of age? :-)
closure.jpg