That makes Sense.
I have never understood why they didn't do that sooner. They are obviously quite happy doing it to one fleet, and have no understanding whatsoever what it like to fly through both side of the clock month after month. What they see is it reduces the number of reserve pilots. However, it will make your schedule much more dynamic. If you get called out on an AD your next days trip will most likely be changed do to legality, and start a cascade of fun for the rest of the month. All 380 turns could then be covered by AD days no need to even roster those. Whatever training doesn't pick up just give it to an AD guy. Unfortunately, this is one rumor I see as very likely. I really really hope I'm wrong.