No Scottish connections, but here's an anecdote that you might find interesting and helpful in your own research. The families of my Gloucester MA community of Sicilians mostly immigrated around 1900. However, even at that time, and since then, there have been Italians from other towns and regions. Many, especially from the Palermo region, go back to visit. When they do, the native Sicilians recognize the "Gloucester Dialect" of their language.
This is very interesting, thank you. Also, what do they 'recognize' exactly: a Sicilian dialect influenced by English or some sort of 'supra-dialect' - i.e. a blend of all the different Italian dialects that are spoken in the area. I think the subject would be worth a separate research project!