Journey to the Western Islands of Scotland by Samuel Johnson, Project Gutenberg.

A little before the section on Raasay, there is a discussion by Samuel Johnson of a combination in table manners and attire that had changed with Proscription. He does not explain, as far as I can tell, how he knows all of this information on the past customs of the Highlands.

The knives are not often either very bright, or very sharp. They are indeed instruments of which the Highlanders have not been long acquainted with the general use. They were not regularly laid on the table, before the prohibition of arms, and the change of dress. Thirty years ago the Highlander wore his knife as a companion to his dirk or dagger, and when the company sat down to meat, the men who had knives, cut the flesh into small pieces for the women, who with their fingers conveyed it to their mouths.
I'm not sure if he is talking about the sgian dubh, in this case, or some other knife that would be worn along with the derk.


He then writes something that raised my antennae because it sounded familiar in practice to other historical events...

There was perhaps never any change of national manners so quick, so great, and so general, as that which has operated in the Highlands, by the last conquest, and the subsequent laws. We came thither too late to see what we expected, a people of peculiar appearance, and a system of antiquated life. The clans retain little now of their original character, their ferocity of temper is softened, their military ardour is extinguished, their dignity of independence is depressed, their contempt of government subdued, and the reverence for their chiefs abated. Of what they had before the late conquest of their country, there remain only their language and their poverty. Their language is attacked on every side. Schools are erected, in which English only is taught, and there were lately some who thought it reasonable to refuse them a version of the holy scriptures, that they might have no monument of their mother-tongue.
So that's some of what Johnson has to say about Proscription,; I will probably need to go back and, from non-Wiki sources, read up on the subject to see exactly what was banned.