I'm switching over to Project Gutenberg's eBook, Journey to the Western Islands of Scotland by Samuel Johnson, to copy this quote. Here is why I brought up Proscription and looked at Matt's articles. Johnson writes:


In the islands the plaid is rarely worn. The law by which the Highlanders have been obliged to change the form of their dress, has, in all the places that we have visited, been universally obeyed. I have seen only one gentleman completely clothed in the ancient habit, and by him it was worn only occasionally
and wantonly. The common people do not think themselves under any legal necessity of having coats; for they say that the law against plaids was made by Lord Hardwicke, and was in force only for his life: but the same poverty that made it then difficult for them to change their clothing, hinders them now from changing it again.

The fillibeg, or lower garment, is still very common, and the bonnet almost universal; but their attire is such as produces, in a sufficient degree, the effect intended by the law, of abolishing the dissimilitude of appearance between the Highlanders and the other inhabitants of Britain; and, if dress be supposed to have much influence, facilitates their coalition with their fellow-subjects.

What we have long used we naturally like, and therefore the Highlanders were unwilling to lay aside their plaid, which yet to an unprejudiced spectator must appear an incommodious and cumbersome dress; for hanging loose upon the body, it must flutter in a quick motion, or require one of the hands to keep it close. The Romans always laid aside the gown when they had anything to do. It was a dress so unsuitable to war, that the same word which signified a gown signified peace. The chief use of a plaid seems to be this, that they could commodiously wrap themselves in it, when they were obliged to sleep
without a better cover.
It's a little difficult for me to switch back and forth between the documents when they are both in the same book; the difference between Johnson's and Boswell's descriptions are very interesting, though...