Just today, Big Finish have released the latest box set of the New Adventures of Bernice Summerfield. These four stories feature Benny travelling with the version of the Doctor seen in the currently NOTVALID Sympathy for the Devil and Masters of War. During their adventures they also meet The Master from Sympathy for the Devil.
I would propose that now that have interacted with the DWU these characters and their stories should be considered VALID. I also propose that, since at the time the wiki was biased towards keeping the Unbound stories out, we rethink a decision made a while back and decide that Evelyn and the Sixth Doctor do encounter the Sympathy for the Devil Doctor during the events of The 100 Days of the Doctor.