The problem is that the church is open to the public day and night, so there aren't any quiet hours to make good recordings at really professionel conditions.
Besides the recording mentioned above there are some further recordings by Hakim (Priory), and I can warmly recommend the all-improvisation-disc by the former titulaire, Daniel Roth (Motette), which is an absolutely stunning demonstration of these exceptional instrument (MOT 10751: "Le grand orgue Cavaillé-Coll du Sacre Coeur a Paris").