When Does Zoro Get Armament Haki. This Scene was taken form Episode 719The Title Of The Episode is. The permanent black blades have to do with armament haki and we could see how Zoro didnt know anything about Conquerors haki because Mihawk didnt teach him anything about it since he is not a Conqueror.
Zoro has armament on the sword as they are his weapons as for sanji it was not clear whether he has armament or not as when he was. Im sure sanji wont get it. He does not have advanced armament haki- at least to our knowledge.
However Zoro did not imbue Haki into his attack allowing Monet to survive.
Heres what he said. Chopper might learn haki if he wants to run aside Luffy and others but doesnt need it. We already have Luffy Zoro and Sanji using Haki and they are the front line of the attack. Im sure sanji wont get it.