I received and installed my neo hybrid ex snow series (satin silver) on my white iPhone 5 yesterday and wanted share a few quick thoughts. As background, I had an iPhone 4 with the latest neo hybrid ex and loved it.
Since I had my phone before the satin silver was available, I put a Ghost Armor back and sides on the phone. I have left it on and installed the bumper over it. It fits great. The case sits tight and there's no chance of it coming off. The best part is that since the Ghost Armor is one piece I won't have to worry about seams and it doesn't form bubbles on the back.
The only improvement that I think could be made is that the case could be a little thinner. I don't mean in thickness/durability of the plastic (which the early version of the 4 kept breaking on me). Since the iPhone 5 is thinner than the iPhone 4/4s, I was hoping the case would be thinner by a corresponding amount. However, it's the same thickness as the 4/4s so there's more room between the 5's glass/back and the top of the silicone that there is on the 4/4s (if this makes sense). It's not a big deal, but I think it looks and feels a little bit better on the 4/4s than on the 5, IMHO of course.
Otherwise, it's a great bumper case!