Ninja, If that were the case, though, I would think the Draught and Extra Stout would also say "Product of Ireland" rather than "Product of Canada." I certainly agree with your thoughts regarding the supply chain; Jamacia is a lot closer than Dublin. Perhaps the Jamacia plant doesn't have enough capacity for the US volume? Anyhow, it's not terribly important as long as it tastes good.
Cheers!
I want one of those goblets, too.