Well we have had rums before that were aged in Islay casks and we have even had a number of malts aged in rum casks.
But this is a first for me: Cadenheads famed Old Raj matured in a 1991 Caol Ila hogshead for 299 days. Wow!
The official notes read, "The result is a creamy gin with faint smoke in the background." And just for your information the botanicals in this gin are: Juniper, licourice, angelica root, orris, cinnamon, casia quills and nutmeg".
Very limited, only 342 bottles released.