He's had an ESP signature like that before the Gus G came out, but it was black and didn't have inlays, and IIRC the bridge pickup was a SD Invader. It also had a licensed Floyd which I thought was weird. I'm pretty sure that that model was only sold here in Finland though.
My friend got and endorsement deal with a Finnish Esp retailer, and he got the custom shop model of that Roope sig from them. I quickly tried it when I was visiting him some time ago. It played very well. He said he sold his Ibanez J-custom and his Jems (I can't remember if he actually owned both of them or if he was just borrowing the other one) when he got it because he thought the ESP just slayed them.