Used it today, out skiing. Really irritating that it falls apart with vibrations! It is NOT easy to tighten it out in the snow... Also the aperture ring is too loose, changing settings when lying in my pocket...
Apart from that it is as good as the other CVs, I would just give it an extra check if buying second hand. I guess I will get it locked with superglue or something one of these days, as it is just perfect for a day out with minimum equipment!