User blog comment:Awaikage/Chapter 807 - Elephant Jack on the Elephant's Back/@comment-24850639-20151119155232

As far as the Kings - Inu means dog, and I THINK Neko means cat of some kind. I don't know what their individual personalities will be like, but I'm venturing to guess that they won't like each other. In addition to the tradtional age-old feud between cats and dogs, they also represent Dusk & Dawn apparently. When 2 people just don't get along, or are different in just about every way, an old saying is that "they are like night and day". At the end of the day the Mink are all animals essentially, and it seems like they act like their respective species for the most part.

Sanji - The fact that he wrote a note says  A LOT. We know how much the StrawHats all trust each other, and how much they value communication at a time like this. Sanji knows full well that if there were some kind of detailed plan that needed to be carried out, he could trust ANYONE on the crew to repeat it word-for-word back to him, Luffy, or anyone else. So in my opinion, there's only 2 reasons that he'd write a note to explain the situation:

1) The situation is desperate/extremely important, and he needs to move quickly. In the case of the note he left for Nami on Water 7, Robin was being taken on a train that was leaving soon, and he was investigating this purely out of hunch. He didn't have time to round up the crew and give everyone explanations, and he probably couldn't have snuck on the train the way he did if someone else was with him. Now that Sanji knows Skywalk, he can go pretty much ANYWHERE he wants in the world at any time. Bringing someone along that can't use this ability would really just slow him down.

AND/OR

2) He wrote the note to avoid face-to-face confrontation over the situation. Trying to explain this all to them in person would have most likely led to questions, and this is probably something extremely personal to him that he doesn't want the crew to know about. Although it seems the most likely, it kinda seems the most unlikely as well. I mean, when Nami fought so hard to prevent the crew from getting involved in her own personal BS, Sanji was there.......and defending her. When Nico Robin was trying to do the exact same thing, Sanji was there.....and defending her. When Vivi needed help saving Alabasta and literally FOUGHT with Luffy over letting them get involved, Sanji was there......and defending Luffy's decision to fight her, knowing that Luffy was trying to just help a friend in need. They're a crew of notorious pirates making ridiculous waves all around the world, so they're ALL wanted by the World Government. Whats so different about his being wanted about the World Government that he feels it needs to be secret?

Guess we won't know for sure until we see the man again, which STILL has yet to happen in a non-flashback capacity since 20 fucking 13.