To answer your second question Imass, the Knights have knowlegde of the Inarta and Wind Reach. There is even an Inartan on the Council of Nine in Syliras, so I would say that they know more about them than some other cities. There has also been Inartan PC's in the city in the last couple of seasons, so even the people in the city should know something about them. They are known mostly as traders outside of their world, and the Knights are fine with them as long as they keep their tempers in check and don't start trouble.
Now for your PC though, if he spent any time in Riverfall, he might already know about the Inarta and have his own opinion, because the Inarta travel there for trade, and the Akalak's look at them as exotic humans.
Now for your PC though, if he spent any time in Riverfall, he might already know about the Inarta and have his own opinion, because the Inarta travel there for trade, and the Akalak's look at them as exotic humans.