I've just been handed a script that is set in a town that is subject to perpetual violent windstorms. Much of the wind will be CG but I just know there's gonna be windmachines and evil, evil, evil dust.
Absolutely -- you have to seal that thing up tight. Dust gets everywhere and it's pervasive. At the bare minimum use a rain jacket, but if you're really concerned, you might consider going so far as an underwater housing. Not necessarily a full-fledged housing, but maybe something like an EWA marine bag.