As a functional disaster I would describe the honeycomb structure of the polyurethane sheath. The surface is extremely sensitive to scratches and is rapidly losing its look. At the corners of the coating wears off after a few weeks and looks worn out and unattractive. Unfortunately, the bag has no loops and no handle, which means you have access pretty paranoid to secure the device while running.
My conclusion: an unreasonably overpriced accessory with modest quality and very limited utility. For me, the bag has landed in the basement after a short time ...