Here's my quick description of Irish Whiskey.
Peterson makes some really good quality tobaccos. Irish Whiskey is one of their traditional blends, and goes waaaaaay back.
It's different from Connoisseur's Choice in that it has more of a true tobacco flavor, with a hint of whiskey in the taste and tin aroma. It's not quite a full aromatic, but not quite a straight blend either.
It has a subtle yet noticeable complexity that makes it stand out. It's one of Peterson's older blends that has stood the test of time. Not harsh at all and no bite, and not heavily cased like so many aromatic blends.
Enjoy, Sir. I hope this one lives up to your expectations, as it sure did mine.