I strongly suspect once enough people start to think that Scottish independence may about to become a real thing, there will be an unseemly rush to relocate to Edinburgh
Turning back the clock. The DUP have shot themselves massively in the foot here, they seemed to have supported Brexit because Sinn Fein opposed it without thinking their position through. An error further compounded by the fact that once he had got his massive majority, BoZo sold them down the river without a thought. Guess no matter how much they may deny it, they can see the writing on the wall same as everyone else.
Same with the numbnuts threatening the staff at the customs post, what do they think they can achieve? That the EU/UK will sit down and completely renegotiate the deal to suit them? If companies can't get their products into NI because of lack of customs facilities, they will just stop sending them. Anyone care to take a guess where their NI customers will then turn to as a source.