Private Nodequeus?

Hi,

First off, I really love the module.
I'm using it to create something like playlists (though not autoplayed at all - just lists of content). What I'm wondering is if there is a way to make nodequeues that are private or limited in access per user. In my ideal world, when you make a new nodequeue you would have the option of limiting it to a specific user (or role if user is too fine grained).

Is this type of functionality even possible?

I tried smartqueue_per_user but it just fed back a lot of php errors and I couldn't populate the queues with any content. I'm hoping there might be some way to approach it solely with the nodequeue module.

Thanks for any help!