It won't work unless you have a parent︃ company elsewhere with a lot of economic substance. Once your cash your, you will fill︄ out the form for no WHT/less WHT, they will check. If they then find that︅ your holding company was actually managed from Switzerland every other year, they will deny all︆ treaty benefits. And a tax certificate from whatever is not going to help as they︇ check themselves.
Also see my above post, they will tax and distributable profit at the︈ former full rate.
Next problem what is with the Swiss company when your are not︉ there? Who is managing it? If you just leave, the tax audit is 100% for︊ the last year you were present. And then you may also face exit tax on︋ the goodwill.