Kilkie's who moved to Scotland obviously didnt work in the Shirt factories of Derry. They left Derry as there was no food or work. Census records of the early Kilkie immigrants showed similar occupations, often general labourer, but often more specific, for example:

It is often said that Glasgow made the Clyde and the Clyde made Glasgow.
From a time in the 18^th century when the river was shallow and silted, making navigation to Glasgow difficult a number of Victorian engineers deepened and widened the river leading to dock facilities that made it preeminent in shipbuilding in the early 20^th century. Alongside other great British shipbuilding areas in Belfast, Liverpool, Sunderland, etc. Glasgow became a centre of shipbuilding excellence