I bought this not as a tool, but a fidget tool. As such, it works beautifully. Great engineering and manufacturing.
I was surprised how large the Grip was when it arrived in its nicely finished presentation box. It is quite substantial. My main issue with the grip is that the sliding mechanism is not smooth and seizes often. That specific defect is part of the description for Grade C Grips, not Grade B, and so I am disappointed in how the products are described. I was expecting nicks and scuffs, but not a mechanically faulty product. I would probably recommend the Grip, if available, but not the clearance grades unless you have the ability and interest in repairing them.
As an engineer Metmo grip is right up my alley, I was impressed with the build quality and the unique styling, nice one guys.