There's a difference between holding oneself back and not going all out at once. Sure, Unohana wanted to help him unlock his true potential, but it's not like she herself always walked around with her bankai active.
More or less, he will still play around before revealing his true power, which will happen to be much more powerful than what he showed before.
Thanks that makes sence I was just parnoid they were going to kill him off
He is too big a character in this manga. He is probably still wearing the eye patch because he still enjoys the fight and taking his time.
I don't think he'll take the eye patch off in this fight. He'll probably just pull out his shikai to defeat this sternritter but I wouldn't be surprised if in his next fight the eye patch comes off.
We dint think yama could be beat either but now I've come to realize he won't kill anymore captins he will likely hinder them from fighting like the dog toshiro byak but first fight back usually mean beast mode its just kenpachi is the only likeable character for me
You could also argue the fact he could now be wearing it for the sake of the trash cannon fodder soldiers. Look how Nano was effected when Yamamoto got not even half serious.... she could hardly breath. Imagine Zaraki now walking around without an eye patch at his new standard state. He'd effect trash all around him so best for him to at least calm it down
But I generally just think he will always use it until he finds a fight worthy... There's a massive difference between an artificial limiter like the eyepatch and the internal one he wasn't even aware of.