Haha. You crack me up...only because I totally re-read my intro and wanted to rephrase things but then I saw I should enter a reason for the edit and the only thing I could honestly put was that I'm a teensy bit crazy.
It sounds like your road to poly was really similar to ours. We also looked into swinging and came to the same conclusion and while we never tried a separate open relationship - we felt it would have the same outcome. I sometimes think this may change eventually though, that we may feel okay dating different people individually, but we would probably always want to be friends with them even if we weren't dating them too. Bottom line, we just hate keeping things from each other.
Looking forward to reading more about you both!