Your Circles, now in Google Voice
googlevoiceblog.blogspot.com
googlevoiceblog.blogspot.com
Also, to have a person in your "creepers" circle, you necessarily need to 'follow' them on Google+. Is this not a poor design choice?
>"for example, calls from your “Creepers” circle can be sent straight to Voicemail"
Maybe I just got caught up in the term used. Perhaps these are folks that for whatever reason one must interact with but like to manage communications? In my personal use a "creepers" circle would be named "co-workers" insert humor here.
Edit to add useful response: I imagine they should alert you to the conflict / prompt you to ask you if they should be removed from the one in order to be added to the other, or to cancel the action..
EDIT: I guess I'm getting downvotes for this so others must disagree. Make sure to go to the homepage (http://googlevoiceblog.blogspot.com/) for the full effect. For me it is almost unreadable.