Spy Handbook Vigilante / Teisatsu

[Yondu Volche]

I get a Spy handbook from my friend and find Great stalker/Ninja!
Teisatsu!

"Ki Power (Su)

The teisatsu gains a single ki power of his choice from the list available to the unchained monk class."

Only one question does Teisatsu scale his levels as monk or only can get ,Unchained monk Ki power, without monk level prerequisite?

[Diachronos]

I'm inclined to say that you count your vigilante level as your monk level since that's how talent abilities like this usually work, but I don't know for sure.

[Yondu Volche]

But it`s pretty interesting because his Ke pool brings from Ninja class, so aprove hi scale his level as ninja is -OK.
But does he do so for monk, if yes so he can bring a quin staff monk abilities as Unchained monk (ki power). It can be overpowered.

[QuidEst]

If we ignore common sense, you get to ignore level requirements altogether! They say that a Monk must be X level to select it, and you're not a Monk.

But seriously, it'd be nice to know. I'd go with "you can meet level prereqs with your Vigilante level", personally, but that's mostly because of the awkward level requirement. You can still only select one, after all, so if you want to wait until 18th to select a cool one, you've earned it by passing up a bunch of levels with Barkskin.