Which silk lining.

[HarveyH]

... It's abrasion resistance is only moderate.

I realize that Matt lines his kilts with silk (I have one of his kilts on order). But as was also noted, silk does not necessarily hold up well to sweat, and a well cared for (but well worn) kilt may have it's lining replaced at least once over it's lifetime because of these factors.

Silk is nice stuff. But it's not indestructible.

I quite agree that a lining may have to be replaced in the lifetime of a kilt, but that is true of cotton or linen. A good raw silk would be significantly harder wearing than many cottons.

Also I have to say that the weather in the UK, and perhaps up in Argyle more so, is such that sweat is not really going to be such an issue.