The scroll name is bugged…
Will make a bug report later.
On my first kill, I got the warrior scroll. Was quite happy. Went back to my base and in my chest I had another warrior roll, which made no sense.
Clicked on both -> you learn Khari RAIDER armor (it stands on the right of the screen for a short amount of time).
So my guess is: The scroll named Khari RAIDER will learn Khari warrior.
Edit: Bug thread: Khari warrior and raider scroll names wrong/swapped