I've been thinking about this thread and the replies, it's interesting to see different point of views here and that is what makes us unique in my eyes.
Have we been exclusive?
Yes.
Have we had different meets with different people?
Yes.
Both have advantages and disadvantages but what I will say is when you are involved with one person and having quite regular meets then you can only learn more from each time you get together, there is nothing better than in a threesome situation where you get to all know each other sexually, you then know the next time you will enjoy even more as you all become more relaxed than the last time.
First meets are always fun but there are always nerves, questions and simply the thought if you are doing anything wrong, I do believe this is completely natural unless you are the type of swingers that have the attitude of, get in, get off, get out.
Being Exclusive is a very common practice in this scene for these reasons and people do love the more relaxed scenario of a regular meet.