I just received the metal O-HC177 hot shoe cover to replace the black plastic one on my silver edition K-3 III. I love the design of the silver edition, but regret they didn't change the colour of the hot shoe cover on it. Hence I got this accessory to replace it.
I'll include a picture later, but already want to report on it.
The O-HC177 looks and feels great, and it slides in the hot shoe confidently. However, somewhat disappointingly though not overly so, the colour of the cover doesn't match the silver of the K-3 III. I would say it is a tone or two darker. It still looks better than the plastic one, and it has the same lovely feeling the metal finish of the K-3 III's top has.
Am I happy that I got it? Yes I am, but it is relatively expensive (49 EUR) for what you get of course. I'm not in a habit of losing stuff like that, but I'll be extra careful now anyway...