> And yes, no more cross-border workers either way.

Well, that will be a problem especially for Swiss industry. Tons of workers from neighboring Italy, France, Germany and Austria work in Switzerland, commuting each day. They do this because workers are paid better in Switzerland than in neighboring countries. If those workers aren't available anymore, Swiss production of all kinds of stuff will take a huge hit.

For the same reason of wage differences, not a lot of Swiss people cross the border for work, and all neighbors are larger (except of course Liechtenstein, but that's a very special case anyways). So for those neighboring countries, it isn't that much of a problem.