Ok... I spoke to Sullimo ( best Diez GM imo ) alot when I actually played. I did bring the question about anything dropping Chitin Shield up with him.
Q: Is there anything that is currently ingame that drops a Chitin Shield still?
A: No, but we plan on putting it back in the game in a later patch.
You guys don't have to believe me, but I wouldn't post it if it was a lie ._.