> Particularly since it is not a vote for Chexit, but a democratic vote to confront the EU

To confront the EU on an absolute red line, yes.

The EC is already not thrilled with the Switzerland situation and was fairly clear that it would not allow the UK to negotiate something similar; it is unlikely that it would allow Switzerland to make the deal _worse_. At a certain point it'd just cast off Switzerland entirely.

If the UK (70 million people) was unable to get the EC to move on this, it seems implausible that Switzerland (9 million) would be able to.