Out. Trade without barriers is the only real EU positive, and it will be in both parties interest to negotiate some sort of reciprocal arrangement eventually, as with selective work/travel/habitation agreements. Cost, overregulation, immigration, loss of autonomy and influence as a nation, political and legal imposition we can do without.
There will of course be winners and losers, but that's what democracy is all about, and I won't loose sleep if the eventual decision goes against my view, though I would then like to see the nation and politicians pull together and kick the issue into touch for a generation .
Jerry