User blog comment:Insistente/Ichigo also survived Auswählen like Uryu/@comment-12511635-20130730193624/@comment-11051098-20130730200859

I'm on that. Ichigo's Quincy powers mimicked his Zanpakutô ever since he awakened his Shinigami powers, but although the Yhwach-manifestation of his Quincy powers used abilities like Blut Vene on its own at least a few times, Ichigo could not use those powers himself.

Besides, Yhwach stated that Kirge's jail "awakened the memories within his reiatsu". I take that as Ichigo's Quincy powers awakened at that point, and hence were asleep when the Auswählen happened.