Yes, but it would mean more renders for you to make - just have some with encounters with and some without?Well I can always make them optional this way everyone can enjoy ^^
For example, if you went on a date with Mrs. Bell or mom and ended up having sex at the end of the day then if they wore stockings leave them on. If you have sex after you were both in the shower / bath then you wouldn't expect her to wear them for sex, right?
So just use your common sense to know when to have them and when not to have them on or off.