This one then :https://thesession.org/tunes/11700There's an unusual EP CD by Kavan Donohoe from Co. Cavan playing an "electronic" set of "VPipes" [ "v" for "Virtual" ], and he plays a reel called "Clancy's Fancy" which I would almost swear is a reel version of the "IW"
That was roughly what I was thinking of, even though I have a slightly different version of it (it avoids all F# s) and never had a name for it.
Tommy Reck played it in three different keys, thing is, it nearly morphs into a version of the Mason's Apron.