Bear in mind the UK use Sterling and the RoI use Euros. A NI person could work in RoI and be paid in EUR but pay rent etc in GBP. Obviously the reverse is true a RoI citizen might work in NI and be paid in GBP but needs EUR to live on. All a bit of a pain and of course the bank's exchange rate doesn't help.

It is easy to poke fun at those at the edges but I think on balance a bit of sensitivity might be warranted here. Little Britain might think that they (we) have some problems to deal with wrt Brexit.

I would suggest that we might look at NI and RoI and at least try to understand that the really important issues are right there - those issues and our responses to them are the ones that really define what sort of people we are now and will be in the future.

The rest is accounting.