This is a very nice whisky - balanced and engaging.   Longrow is billed as "heavily peated", but it's not a peat blast reminiscent of Islay.  While the peat certainly isn't subtle, it's a very nice smoke that's pervasive throughout the nose and palate without ever overpowering the other elements of the dram.    The three types of casks used - bourbon, rum and sherry - create a finishing element that presents in a unified way.  In fact, it seems as if only one type of cask had been used.  The combined taste reminded me of a cognac finish - fruity, a bit sweet, some wood and a touch of spice.   If it hadn't been discontinued some years ago, I'd buy a bottle.  But I'm very glad I got the chance to sample it; thank you @richardmoderndrinking for the pour!  Maybe we'll see something similar from Longrow in the future.