Yes, both sides have the same finish and the entire thing is anodized. Only the top has the Mirko Racing logo as engraving it on the bottom side seemed pointless to him.

Due to the way the pocket on the bottom is machined, it does have a kind of 'pattern' to it, but it's not noticeable if you get an anodized one. The pattern is kind of a 'box inside box' pattern.. I don't know how to describe it but I'll try to get a picture if you really want to see.
