Can CustomPress posttypes be made into Premium Plugins for Prosites users?

Hi there,

I'd like all my users to be able to post via certain CustomPress posttypes I make; is this possible? Ideally it would be great if I could use it as a Premuim plugin so people can only use that posttype at a certain Prosites member level, but I will settle for everyone being able to use it.

Thanks for the help