Shielded Labs would be a Zcash support organization similar to ECC and ZF, with employees doing Zcash related work. I never said anything about redistributing block rewards as grants. That’s what ZCG is for. Please read this post for additional information:
For the Zcash Sustainability Fund, we hired two engineers from the Equilibrium Group as contractors to do the development work. We structured the independent contractor agreement in milestones similar to how ZCG structures its grant agreements. Is that why you think Shielded Labs issues grants? We did it that way because we don’t currently have full-time employees.