Dude he used to be called "a sand giant" and the only way you could tell he was the one with the plans was by conning him to see what level he was, they only recently added the Husam at the end to help make paladin quests easier I guess but now he is KSed by everyone to sell the plans to some poor paladin
The giant is actually named "a sand giant" just like the rest... Except he says somthing different when he attacks you. Somthing like "Husam will slay you all for tresspassing on his lands!" Can't remember exactly what it was he said.
I have seen him and killed him myself. He does show up as Husam. But as it says in his description above, sometimes he will show up as a regular SG that says Husam will slay you or something. So in effect you are both right. Only thing to do is go up and see what he says as he's whackin ya. =) Have fun.
The fine silk turban is found on a named sand giant in oasis low twenties there too. Must be a very rare spawn though I leveled 5 times in oasis and saw him once.
Yes, his name definitely is sand giant Husam. I have seen him 3 times when camping the ancient cyclops. He conned green to me at lvl 38 and I could solo him easily (I am a warrior and was wielding a 2H silvery war axe). He drops the Kilij plans each time.