I'm sitting here in the DC 'burbs, waiting out the storm myself. I favor your approach. As others have mentioned, you DO have to remember not to leave the wiper switch in the on position (could be an easy mistake with some switch configurations, especially if you were using "intermittent" when you stopped). And, as you say, you DO have to make sure the wipers are free before you turn them on. But at least you don't leave the wipers sticking out to attract vandals or stupid adolescents.