Supernews and its many resellers (Airnews, ISP's, and whoever) wont add it until it's listed at ISC.org. *link repaired*
It doesn't seem to be, unless I'm on the wrong part of the site.
So some people wouldn't see it. And there's the potential that a limited premium account would be insufficient for a large number of posts.
Depending on how many servers have that goofy policy, it might even affect propagation.
On the other hand, if they were also crossposted to a group that's on the list (even a.b.dvd) it would only be an inconvenience.
Innumerable thanks, Segaflip, for the ongoing postings, and for the a.b.dvd.fanedit effort.