I tried this plugin a few weeks ago. It worked really good but it didn't do what I wanted.
I can't remember which, but I was wanting to create a private page or private posts (I think it was private posts) that could be viewed only by people within log in privileges.
It worked - but the user had to have one of the higher privileges before they could see the private page/post.
I think the user had to have at least the Author privilege. The plugin would not let users with just Subscriber privileges view the private area.
I decided that I didn't need the private area so I dismissed the idea.
I was wanting to come back and report on my review here earlier but I have been busy with work.