If all of this were to pass it would start to put huge pressure again on the Euro, in my opinion. The dollar and the value of gold would rise purely because people will not want to invest in anything else. This is why it’s in the EU’s interest, as much as it is in the UK’s, to reach an amicable deal. The words “sabre” and “rattling” could be used to describe a lot of what is going on in the current EU v UK negotiations - arse boxing, to put it another way. There is a lot to be gained by people like David Davies and Barnier* by being seen to flex the political muscles.
*Barnier to quit as the chief EU negotiator?