Paddy I think I heard was the sales guy travelling around selling Powers years back, and so people started asking for Paddy's rather than Powers, thus the name and birth of that whiskey.
As for the Scotch coffee, yes, a great combo with the Ardbeg! The yearly, (almost 35 years strong now!!) New Year's Eve turkey feast at my girlfriend's parent's house a few years ago almost ended in disaster, no Irish Whiskey for the Irish Coffee! "Not a problem, use the Ardbeg," I insisted! We were all surprised to see it work perfectly, and all enjoyed the smoky version even though they aren't whisky drinkers.