Sell Membership in MarketPress

I have put this in "Feature Suggestions & Feedback" for now, because I am not sure if this is possible. I want a way to sell subscription to a membership level (made in WPMU Dev Membership plugin) through the e-store created in WPMU Dev Marketpress plugin. Is this possible?

If it is not possible with Marketpress, can it be done with Easy Digital Downloads, because all of the items for sale are digital anyways?

I know that Easy Digital Downloads is not by WPMU Dev, but it is popular, so maybe a WPMU DEV Staff Member or community member can help me out here.