I feel a bit dirty but it piqued my interest enough to have to go check this. Having had a quick Google it throws up this 2013 article at the top of the search:
http://celticunderground.net/oh-no-not-10-in-a-row-2/
it seems there was indeed an early groundswell of singing about 10IAR which, interestingly, the author seemed fairly equivocal about, preferring instead the CL as his benchmark of success.