Yeah, I was looking at the Carbon case but I saw a review of it and it looked too flimsy. I think the adopted one is the same as the carbon but without the cheap looking carpet attached to the back of it. Hope I'm wrong though.
It doesn't feel as solid as the bumper case on my Nexus 5, that's for sure, but the patterned part on the back isn't carpet It does have some texture though, and the Q-Bert style cubes on it are also slightly raised adding texture.