Of course, safety takes a priority, but checking in on the sub is a must.
I’m imagining if the sub where a man and the dom a woman, she could wear a skirt or dress with no panties and maybe get a quickie while company is over.
If the sub were a woman, the dom could leave her with a remote controlled vibrator in place and play with the remote while else where in the house, if the remote was powerful enough anyway.