If your pants are a carbon based scent containment variety,ie.Scent-lok etc. leave the pant untucked the carbon at the boot top is supposed to adsorb the odor. If on the other hand you don't believe in these types of clothes then tuck em in to prevent some scent from escaping. Never heard of the wicking effect but in rubber boots untucked you can feeal the air moving around you leg. You could aso wear gaiters to seal it all up.