User blog comment:Xilinoc/Ch. 557 - He Already Set His Life Aside/I Already Threw Away My Life/@comment-5551986-20131113182604/@comment-11051098-20131113194842

I'm not sure that's gonna happen. Sajin said his unarmored Bankai is made of pure reiatsu, the "felt" effect of reiryoku, spirit energy. As far as I know, reishi is a totally different thing, the material everything in SS is made of.

So his Bankai being stolen with Sklaverei, I can't see that happening.