If you lay thin strips of silicone or at least electrical tape between the halves of the body, then the resonance goes away and the keyboard sounds much better.
Got pros:
Good keyboard with hot-swap and open firmware for beginner enthusiasts, but has quite a strong metallic resonance when typing out of the box
Has some cons:
Despite the amount of noise isolation in the case, the case resonates when printed.
The promotional information indicates that the switches are lubricated from the factory,