So a single chorae can zap out a Scarlet Spires Standard Ciphrang, but a single chorae should not be able to bother something like the Seal of Cil-Aujus. Perhaps there is a choric scale? If that is the case, perhaps the Carapace is a Divinity-Containment Device. It has 11 chorae. The Consult may have figured out how to multiply/exponentially increase chorae when used in groups or maybe the whole Carapace is choric. So they may have enough choric stuff going on to trap and contain a freakin deity. Like Yatwer or Ajokli or Onkhis or whatever. Maybe. As in, 1 chorae would not be enough to banish Ajokli back to the Outside. 1 million chorae would be. 11 chorae cleverly situated just so plus X factors and the Consult trap a god or the God in the world.
Also, it is interesting that no one in the text has commented on Mog's mark. With 11 chorae, it would seem that the Carapace should have a mark or that Seswatha would be like "wtf--did they put 11 fake chorae on just for hood ornaments?"
Unrelated--I wonder if Mog has a mirroring effect. That is, when the Consult bring forth Mog in Earwa, perhaps it creates a Mirror Mog within the Outside. If the Outside is nothing but Hell, maybe this is the Inchoroi attempt to create Heaven--an island of respite for Sil and all those lost. Or to extend it, if Mog is a soul-catching device, perhaps the Consult intend to let it run until nearly ever soul (human, ciphrang, god) is sucked into it clearing out the Outside entirely except for people in the Obscenity Club who get to snap up all the unoccupied land.