I'm a cold water shaver, personally, 1 day or a full beard, I know that three passes later there will be nothing but a darn fine shave....makes no difference to the blade, it's cuts the hair at the same place.
As a matter of fact, as has been mentioned before, I'd rather have a good beard going than have to do a clean-up shave....more fun to hear that blade sing if you're using a hollow or growl if you're using a wedge! :D