We are a full swap couple. We won't seek out a soft swap couple, but we're willing to play soft swap if they seek us.
We have played complete soft swap once (not just girl/girl action) and found it was missing something, but our motto is that we'll try anything once - twice if we like it
We did like it, so we can try again.....
We have no desire to convert another couple.. We have all the toasters and coffee pots we need and they aren't giving microwaves yet with conversions, so it's not necessary for us to do
As for the rules - yes, that would make a HUGE difference for us. Soft swap to us is swapping partners for everything BUT intercourse. If it falls short of that - we're out. We don't want girl/girl action only where the men just watch, but that can be a part of the action.