The other element of it is that the Speaker—under the new reporting mechanism for the parliamentary protective service—has oversight over that service as well. He has that alternate role to which he made reference in his ruling, so there is that element as well. Beyond his finding of a prima facie case of privilege, he also has the administrative authority as the head of the House of Commons with the oversight of the parliamentary protective service. There is that double element there, so he might have an appropriate mechanism as well.
To that end perhaps—and I don't know how we would go about requesting the studies that he referenced in his ruling—those studies would be very much pertinent to the case at hand as well.