There's one thing that nobody has mentioned that you might keep in mind.
My wife and I had rules at one time that allowed everything except intercourse. Her limits.
Well, we were with one couple for the second or third time that we really liked and my wife and the man went off to the bedroom alone. The other wife and I stayed in the living room and played while they were gone. I kept the rule!
After about an hour my wife and the other husband came back and my wife smiled and said that I should take the other wife back to the bedroom without rules.
OK, it had been her rule and was probably OK, in her mind, for her to end it. But, I do remember being a little miffed for a moment. Well, until I got back in the bedroom with this beauty that I'd only had foreplay with. Then, I quickly forgot about being miffed.
But, if you do start feeling more comfortable with swinging and decide you might just like to expand the experieince with a certain man..., let your husband know beforehand. That way he can enjoy it with you and not feel 'miffed'!