Ah, Switzerland.  The land of fine time pieces, exquisite chocolate and institutionalized tax evasion. There’s been a switcheroo as regulators on two continents engage in a light wrist-slapping at UBS over the bank’s role in the Madoff fraud and the let’s-arm-our-unregistered-advisors-with-encrypted-laptops-to-help-Americans-cheat-Uncle-Sam affair. Troubled UBS has brought on the architect of Credit Suisse‘s recent turnaround, Oscar…