And fwiw, I just checked if the tune was included in Terry Moylan's collection of Johnny Leary's music. It is, not note for note as I recently heard, and learned it.

The comment in the second edition of Terry's book states Johnny Leary played this, and a number of other tunes, at the request of Connie Ryan during a visit of Ryan's group and Brook's academy, so he (Ryan) could use it teaching the slide in his dancing classes.I think that would be enough to confirm its dancing credentials