I have been banded almost a year and I have PCOS as well.  I stopped taking metformin 1 month before surgery and I haven't started again after.  I started getting my TOM the month of surgery and have had it regularly ever since.  A lot of my PCOS symptoms have dramatically improved.  I had melasma on my face, neck, armpits and abdomen.  That has completely gone away, except for a small amount on my face.  My acne has completely cleared up and there has been a huge improvement on the hairy chin/face situation.  Most of my weight is in my belly, but it has improved tremendously as well.

At my latest GYN appointment, the doctor said that I was fertile.  That's a word I never thought I would hear.  I don't intend on trying to get preg anytime soon, since I'm single, but it was nice to hear anyway. 

Good luck on your journey.
Christina