I started with a Gyn when diagnosed and then went to an Endo and then back to a GYN. Then I got a PCP her put me on Metoform.  Then when I had my Hysterectomy for endometiral cancer, I was taken of that medication.  However, my ovaries are still hangin around, and I have had a lot of cysts even after surgery.  But for now my Gyn is taking care of things, by using a new protocol for endometrious and cysts, I am on Femara and Progesterone.  And my ovaries have tamed down alot and have shrunk to the point that she cannot even feel them any more!  Which is awesome to me!  Because I don't feel those darn cysts anymore either!  And I am off bad carbs now and I have noticed a big difference in my overall mood and blood sugar spikes.

I have a funny story about my ovaries:)  During my lap band they were going to go and take pictures of my ovaries to see what they were up to, well, the doctor could not find them.  So I wake up after surgery and was told you do not have any ovaries!!!LOL I am like, uhm where did they go.  My gyn said that they have become streaks and thinned out and are part of the body's tissue so they are not as obvious.  But they are still there. 
Also, the doctor went to tell my husband I was okay, waking up and oh by the way, she does not have ovaries and he was yes she does and she said no she does not!LOL  Talking about this in the waiting room!lol  Hope you enjoyed my little ovary story.

My RE told me that it was based on your body weight. When I was heavier I was taking 2000mg a day. I have been off of it since surgery but I wonder for my ovaries sake if I should be taking it again. Hope that helps. P&PT's.

Have always seen an Endocrinologist for the PCOS.  My PCP won't even touch the issue (maybe because they work in the same office, i dunno).  Never been to a GYN. 
Unless you are worried about having children soon, I don't think you really need to see a GYN, unless you find one who specializes in PCOS.  The insulin resistance and other hormone issues are problems more suited for an endo, but if you feel you are getting adequate treatment from your PCP, stick with that. 

My old PCP used to treat me for my PCOS and it was fine. My new PCP wants me to go to the GYN for that treatment but I think her reasons for it is because of the infertility involved.

Honestly, I don't see any reason my PCP couldn't do the same things my GYN is doing. I'm not trying to have kids right now anyway! lol

Here's my honest opinion as well as what my doc said....

PCOS makes it HARD to lose weight usually. The band does nothing for you but leave you no choice but to eat smaller portions. So it makes it easier to lose weight because you can eat less. My biggest failure factor has been giving up because PCOS makes weight loss so hard. I would get discouraged and go back to my old ways of eating. With the band, I can't do that. I can't just give up. Well, I could, but that'd be pretty stupid and financially irresponsible considering I paid almost $5000 out of my pocket for this thing. I chose my surgery with my primary focus being which one would better suit my lifestyle, long term expectations, complications, etc.

RNY does offer quicker weight loss, and makes loss for PCOS patients easier, but RNY just wasn't for me.... pcos or not.

My PCP pushed me to have RNY but I didn't let her sway me. We're both happy with the results I'm having thus far.

It is harder with the band than RNY, but it's possible either way. Pick whichever one you feel you will benefit the most from and will suit your lifestyle the best.