I usually make it a rule NEVER to do this very thing. Maybe I am just too superstitious but maybe there is a bit of logic in if you own a heavy hitter against your PS and your PS really blows it, you may get the points anyway from offense. It seems like it would be a wash to me so I never set out to do it - but I guess it could be considered "insurance" - better a wash than negative points?

You know me, once I get my mind set on something, I usually go for it, all OUT and all IN! :p