At a meeting of travellers last year, organised by Bob Pegg, it was sung and firmly credited to a member of the singer's family. I recall hearing on a compilation of field recordings in the late 1950s a substantially different text to what was presented as the 'authorised' version.
Very sweet tune, similar to the Irish song whose chorus begins
'This is the way from day to day the world goes on I'm sure
Some rambling in the riches while the drinking man is poor'

Kylesku chorus as best I recall it

Of all of bonny Scotland, I dearly love the West
Its ## and ##, truly are the best
For grandeur and for beauty in the hills when passing through
There's many miles from Lairg to the waters of Kylesku