Maybe I'm the fool.......
I have now committed to the switch to the N reg, being half way through my FAA IR training, I will sit the writtens here in the UK and return to the US for the flight test...Its no big deal, I dont see why you would never go to the states to do it?
My bet is, that nothing much will happen in the short term. DfT have not received the answers they expected from The CAA and I think this is someones personal soap box issue.
At least I have put my money where my mouth is
Should be an interesting one to watch.