Thanks. I guess I forgot to say my concern-- I just wouldn't want to open myself or my midwife up to any legal issues and really, even criticism. Homebirth midwifery is kind of alegal here in PA. OTOH, with twins, I want everything to be clear and out in the open.
Maybe don't bring them to the first interview. Test the waters, and if when you say "I had a homebirth last time" they say "OMG on purpose?!" then consider either interviewing elsewhere or giving them the info without your MW's name on it. Then again, if they say "Great, any concerns from that birth?" you can offer to bring the medical records to your next appointment.
I had a home birth last time and will be having a hospital birth any day now. My Ob wasn't concerned with my records from my previous births they just asked me a few simple questions. They only wanted records related to this time around, since I switched from a midwife mid pregnancy.
Personally I would not take your records, more than likely they aren't going to take them seriously and I wouldn't want to risk your midwife's safety and privacy. We're in an illegal midwifery state so it's always first on my radar to protect the midwife. I think you could just give them the gist of how your last birth went if they even ask, but they probably won't be very interested because a twins birth is nothing like a singleton birth. Good luck!