membership / supporter integration questions

I just want to make sure I understand a couple of things so I don't get to deep into my site and realize I can't do things the way I wanted...

1. When I enable the membership/supporter integration the cost to sign up for my site is the one in the membership so the payment settings in supporter are not used? So the 1 month, 3 month, or yearly payment on supporter is irrelevant if I use membership for my signups?

2. With the integration then does that mean if I set that to yes (under membership) then my members would have the same benefits as if I were just using supporter (ex: ad free blogs, premium plugins and quota increase)? Plus they get whatever I have set under my membership levels?