CollateralGP Scammer or TwC?

Link to scammer's Sythe profile: http://sythe.org/member.php?u=317928

Briefly explain the trade: I didn't actually trade him but he seemed very sketchy. Look at screenshots for reference. He immediately went offline after I asked for confirmation of GP in-game.

Proof that you were not talking to an impostor:
http://screensnapr.com/e/tZaxCF.png

Trade screenshots:
http://screensnapr.com/e/ZvQYxl.png
http://screensnapr.com/e/NI4UB1.png
http://screensnapr.com/e/C4YJkR.png
http://screensnapr.com/e/Vom9mP.png
http://screensnapr.com/v/SFTQEJ.png

Also consider looking at other user's suspicions on him @ his GP-selling thread:
http://sythe.org/showthread.php?t=1277127

I'm just putting my suspicions out there.

 

Banned, thanks.