Brexit means the last, best chance for a united Ireland.

[MADem]

29. It'll take two or three years to "de-couple," so no worries there.

There's been some talk of crafting a Scottish currency (like the old Irish punt) that keys off the British pound, but who knows what they'll do? Maybe they'll just continue to circulate the pound for the time being--it would be in (what's left of) UK's benefit to leave things as they are in that way, at least in the near term. It would certainly make the bookkeeping easier. I simply don't see them saying "You can't use our money." How can they even enforce that?

Look at Ecuador--guess what they use for currency? OFFICIALLY, mind you--not black market, like Venezuela.

The US dollar.

Really--not making it up. The official currency of Ecuador is that Mean Mean Green. It has been thus for sixteen years, now, and they like it--much better than their crappy and volatile sucre that they dumped. It's very convenient if you visit--no moneychanging required at all! And it's not like they're our best buds (remember Evo Morales and his plane games in Europe? And who is that fellow sitting in the Embassy of Ecuador across the street from Harrod's in London?) but hey, we've got the most stable currency in the hemisphere, and they know it.