User blog comment:Blackendedsoul/Rayleigh and Zoro/@comment-3977726-20110505170111/@comment-3977726-20110506095742

yes they have. watch the fight zoro vs daz bones. he hears the breathe of his steel = color of observation he sence the precense of the rocks falling and the precense of his sword under the rock without seing it being there = color of observation he cut steel = color of armament watch the fight against kaku once again. haki wakes up within those with the strongest will and once they reach a critical moment, will zoro have an incredible strong will almost as strong as luffy's and he have reached that critical moment several times. in every fight he is beaten down half dead but he still survives and wins because of his will.