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Has anyone tried out the Ag++ designed by Andrea Ponti?

http://www.yankodesign.com/2012/12/11/iphone-metal-advantage/

http://shop.pinewayasia.com/Ag-Metal-Bumper-for-iPhone-5-CL-IP5MEBP.htm

I'm interested in whether or not it reduces your signal (at all), and whether or not it scratches your phone over time.

Even if you used the 4/4s version, please post your experience.

I haven't used it, but I can tell you it looks like it will degrade your signal, and most likely affect the chamfered edge if nothing else. I use a fake Sector 5 and a fake Vapor 5 often. The Vapor affects the signal a bit because it's a fairly solid piece like this case is, but the Sector 5 doesn't affect it at all because there's lots of holes (cutouts) in the sides. Also the Sector 5 has been fine, but the fake Vapor has given me a few gleaming silver spots on my chamfered edge. Just my experience.
 
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