The only personification of power we know of is the Zanpaktou (IIRC, of course).
My guess that Kubo is in his infinite creativity is going to give Ichigo the inverted Zangetsu that Shiro used. Whoo so different. It's white now.
^ Well, as much as I'd like to ridicule Kubo, he might have planned something along for it to come together...this well? Might be the translations just happen to support this as well :D
Sadly, still not enough to redeem what he did to Bleach...though I can't wait for the explanation regarding his inner Quincy King.