The coating feels nice, shape is better and safer than XM1 to suit me, scroll wheel is comfortable, one tip here: push it right for smoother scroll, push it left for tactile scroll.
Overall an upgrade of XM1 expect the cable and mushier clicks, but I am sure you won't notice much difference on the cable, it's still softer than the Viper's.
After received replacement from amazon, the new copy is just fine, and it has same batch number as the first one, so I assume I just had bad luck at first time, both switches are fine, they are optical so I didn't expect it as crispy as regular switches, but still better than razer's.
After adjusting the screws, I managed to make it feels similar to XM1.
The overall build quality of the mouse is better than XM1. Therefore I changed my rating to 5 stars, and recommend this mouse to every claw grip FPS gaming players, or palm grip for small hands less than 17 or 18.
Roccat has done a good job on this mouse, and I wish they will release more good quality products at a reasonable price like this mouse.