User blog comment:AYET/Luffy loses an arm/@comment-24638955-20140929112634

I admire people that bring new things but this time not that much.

Even In other mangas that are more violent the guy loses the arm only to get it restored later. if that happens to Luffy's it will be the same. Don't forget this is a shonen not a seinen and It's the most important main character of One Piece.

Busou Haki only sticks around things, it doesn't have a form of it's own otherwise people would throw Haki daggers or swords out of haki.

That would be also a pain for Oda to do we see the arm but others characters not it would be like a portergeist for them and would have to explain it again and again also haki not being a part of Luffy's body wouldn't have the Gum Gum properties.

If that were possible Shanks would already show it's possible and Mihawk wouldn't say he doesn't want to fight him because of the arm.

Most important of all what brings to the table the fact of Luffy's losing an arm when his ability doesn't help in that matter like Kid or Aokiji.

Pd: Don't get mad, I'm just being analizing thing to see in more depth the points that you have in mind ;D