I'll raise my hand and my sword to help out with either woman's fantasy. And I agree with the no crossing swords.
As dudes, I think it will depend on the guy. Some people may want to keep it as a one time thing and they never saw those people again so there are no recurring memories of it or lingering awkwardness. And some might want the comfort of knowing the other guy so as to be reassured nothing is going to happen between them and that they have a story to share about this one girl this one time. Mainly it's about comfort.