User blog comment:Xilinoc/Ch. 552 - The Fundamental Virulence/@comment-5606268-20131009163537

I wonder if anyone noticed this, Urahara stated that the pill would work for Vice-captains and Captains who can use Bankai, after saying this I noticed that a pill appeared by Omaeda's side.

Just wondering, would it be possible that Omaeda has attained a Bankai?

Still on that train of thought, I don't think that the weakness Urahara found is foolproof.

These Quincy have been studying the Shinigami for quite some time, surely they noticed their own weakness against hollow powers, and that the medallions would suffer because of it.

So judging thus far, the Quincy have been two or even three steps ahead this entire time. Also giving credit to Kisuke and Kurotsuchi, I think they probably have thought about it as well because, honestly, the solution sounds so simple. Like in a game of chess when its too simple it probably isn't.