The same play with the nine or 10

Colin Mochrie, a Canadian who is one of the stars in the funny improvisational show "Whose Line is it Anyway?" said, "Nine out of 10 Americans believe that out of 10 people, one person will always disagree with the other nine."

In today's deal, how should South play in six spades after West leads the heart queen? What would declarer do if his club 10 were the club nine?

In the auction, there is no need for South to gallop skyward; his two-spade rebid is forcing. North's jump to four spades promises at least four-card support, but requires no points and denies a first-or second-round control (no ace, void, king or singleton). Then, South's final bid is a gamble, but who would do less?