My take on the divided Ireland bit is actually the reverse. There is no reason now,as far as an NI person is concerned,to promote a political union South and North. In fact as the process washes through,and the financial advantages of remaining aligned but separate will become more apparent,there will be a strong incentive for the NI Assembly to stay as they are.I have read and re read the available bumf on this deal, and frankly it looks as if Boris has simply surrendered to the EU!
On the face of it goods from the EU come into NI tariff free, but goods out to them have tariffs applied?
This Customs Union business appears to favour the EU, though it is all so confusing, perhaps someone can put me straight on that?
Long term it looks like the end for a divided Ireland.
I do however expect that there will need to be inspections on goods leaving Ireland , originating from beyond RoI, on ferries to France.