Damn this chap pretty much convinced me that all of the amazons are being fooled and know nothing of DFs and think it's from the gorgon curse. Also the gorgon story is most likely a lie; it doesn't rule out the fact there may be a gorgon monster out there though.
Strangely enough they know nothing of DFs but know so much about haki, which leads me to believe haki > DFs. since some of the sisters thoughts alluded to Luffy still being a weakling although a fruit user.
Also one of the sisters used mantra by predicting Luffy's attacks, so I'm gonna assume mantra is some type of haki, so Enel and that little girl from the Shandian tribe can use haki. Also in some cases DFs can make haki more powerful since Enel's mantra was improved due to his logia ability. (I would've liked Luffy to atleast think about the time Enel read all his moves but ehh it's still self-explanatory).
Even though they say king haki is a 1 in a million chance of occurring in a person. The statement after of "chosen ones" leads me to believe there are documented events of the people who had it whether it was at the same time or throughout history who knows but as of now both Hancock and Luffy have it so that's a start and leaves the possibility of more ppl having it.
It was a great chap actually(thought it was just be good from the spoiler thread) but a lot of info, good fights, etc. Also Luffy didn't pwn like some of you thought and since the sisters are this strong it proves to me that Hancock is the strongest even though her DF has no effect on Luffy(has haki anyway). Hancock was pretty funny this chap, and the moments with the stoned amazons added some suspense.
Also Hancock statement that she hasn't perfected her king haki proves to me that haki isn't your dreams/ambition manifested and all you have to do is strongly want something for it to be powerful. It's an ability that can be trained just like a rokushiki.
Speaking of rokushiki I'm still not sold that it's haki but this is some of the first evidence I think might prove it even though I think otherwise. You could think the sisters were using tekkai when Luffy punched them but his punches never bounced off of Blueno or Luffy so I dunno if that means they are separate techniques or the sisters just have some stronger version of tekkai.
I'm quite pleased and can't wait till the next chap.
Oh and I still don't believe that Kuma sent Luffy there (I also don't believe Kuma knows where Luffy went except that it was to an island) to beat Hancock or to learn haki. This situation isn't one where he learns anything since he still doesn't know what he did and there are no signs anyone will teach him how to use it(save Marge after things settle down). As for him using haki it can be compared when he did it on Duval's bull; an unexpected usage of pwer he is not aware of, which could have happned at anytime depending on the situation. It's kinda clear that right now Luffy's haki is dependant on his emotions which would give a reason why he couldn't use it when his nakama were getting their ass handed to them in SA, he was mroe desparate and pathetic than anything….............