As far as i remember (and it is possible that i confuse it with something)
What you mention was only picked together from some lefovers from previous patches ... like something Larian intedned to do ... but then decided differently and leave the idea. O_o

I believe it was explained here:

Again ... unless i confuse it with soemthing else. smile

I still dont understand why cant we change Race for our hirelings. frown
Lets us play Githyanki as racist as they trully are! frown