We do so, and cannot recognize any more "aggression" than "usual". Of cours, if you grab into the wet box in the evening, might happen that the snakes snap, but i dont think that has anything to do with the rats/mice in the room.
I keep them in the same room and don't have any problems with the aggresion just there feeding response. Seems to me that since I have started doing this that when I open there tub they automaticly come up looking for food since the room is dented with the rats. They don't strike at me there behavior when I open them up has changed. Not every time and not every snake but I have noticed that.