I just got ToB and I'm finished with SoA - completely, except I'm waiting around for my Jaheira romance to end. I know it continues in ToB, but do I have to wait for her to get her pin before finishing Irenicus? Or will it happen in ToB?
I don't think Jaheira will get her pin in Throne of Bhaal, so if you want for her to get it, you'd better wait before you finish with Irenicus. Try sleeping outdoors a lot. Good luck!