In Bleach, we only see the Vaizards don their mask before fighting, never releasing their soul slayers save Ichigo.
However, Ichigo uses bankai, then his mask, in that order, everytime.
I was wondering, what would happen if Ichigo donned his Hollow mask, then used bankai? would the release be any different? Maybe it's the way for him to reach a new power level?
Sorry if this has been already done, just wondering...