There are lots of factor to be vonsidered. Like the gvt help he farmers are gettibg to grow the barley that goes into the product, will all the taxes be equivalent, would other distributer aside the European one take advantage and buy more of the available stock, what currency would Scotland choose.
Hopefully the product does not change quality and price wise because that would indewd suck a lot of balls.
I'd have to find a replacement product that fits the bill and it would not be that easy IMO.