Mick I think knows this subject more than I do, although I am more or less one of the major (at least frequent, anyway) editors relating to religion and Christianity. Also, in some of his statements, like his accepting the "Apocalypse of John," is is clear that he definitely qualifies as "former". There are also a variety of Jewish Christian groups, although there is no evidence Dylan belonged to a group that has been described as such. This subject has been extensively discussed before, and in fact led to an editor being banned at one point. He did achieve a great deal of press coverage, and thus notability, for the albums he issued during his "Christian" period, and it is seems on that basis that his "Christianity" be noted. As he has never conclusively subsequently officially renounced any form of Christianity, there is a good chance WP:BLP might enter into our moving him into Category:Former Christians or anything like that, because he has never himself that I know of described himself unequivocally in such terms. In short, this is still a matter of some ambiguity about the subject, particularly taking BLP into account, and I think the current categorization schema was arrived at after those really lengthy, and frankly extremely contentious, discussions. And we really don't have a category of Category:People who have been described as both Jewish and Christian, so this seems to be, basically, the only way to go. Some sort of FAQ template at the top of the page might be useful here, but, in general, I think Mick is among the most productive editors on this article, and I trust his conclusions based on the amount of material he has personally reviewed and his conclusions.