Board Thread:General Discussion/@comment-27086661-20151114145816/@comment-27392440-20151213201848

You forget that if the inner hollow is also the zanpakuto spirit then it's powers count as a shinigami or else offensive kido-type powers couldn't be used, lest you get a similar problem to the one quincy caused by killing souls. IQ don't think it's a stretch to say that it's shinigami energy itself and not just the literal blade.