That is a nice sneaky but legit plan. I dont see any harm in it. So far I have seen no obvious disadvantage with chice hotels program. The only thing that stands out in starwood is the nice redemption feature with no black out dates, but it lags behind in the number of hotels, restriction on the number of children in a room (3 in my case) and free breakfast for all which is a big plus in my case with a party of five people.
People have unique cirumstances and accordingly there is no one program that is perfect for all. However when I see my situation, I think I will definately go for choice privileges program.