To answer Lighter's question, no, the melodies in Greig-Duncan are not like Lloyd's - to my ear at least, though I have argued 'similarities' here before when other people hear them and I don't.

There are eight tunes in vol. 1 of Greig-Duncan, all in major except one, and that was the one recorded by the Gaugers. The others are major, and in either 6/8 or dotted hornpipe rhythm.