If you just use WP-Zombaio Plugin there is no need for YourMembers.
Barry (The guy who developed WP-Zombaio) actually works dev for YourMembers...
This plugin enables you to add your site info from ZOA and it creates new users ( As Subscribers) WITHOUT needing to check off "Anyone Can Register"
Currently WP-Zombaio allows you to choose one open page and the rest is behind a members wall. You can use this page as a landing page and allow both join and login on this page as well as some teasers etc.
In the future Barry plans to add the ability to Lock and Unlock specific directories but in the current build you can only Unlock one page and the rest is locked.
It works great though. The Zombaio form simply creates a user and allows you to specify that if the user cancels with Zombaio wether to Delete the User or just Block it until they reactivate(Pay)
WP-Zombaio
http://wordpress.org/plugins/wp-zombaio/
Barry's Blog on WP-Zombaio
http://barrycarlyon.co.uk/wordpress/...ns/wp-zombaio/