About what - the bad knees, an intense dislike of midges, or wet kilts?

I'm sure that in heavy rain my ancestors sensibly either took shelter or wrapped themselves up in their great kilts and waited until it went off - and the areas where the midges are worst are the least populated areas of the country!

As for a wet kilt it's harder to imagine a more uncomfortable garment for walking in - the wool soaks up the water, increasing its weight several fold, and if you're walking any distance the bottom of the heavy wet pleats swinging across the backs of your legs will rub them raw.