Got the silver one and it looks real nice keeps it's shine.  Limited card holding.  I can only carry six cards, which I like because I am a minimalist.  The way it works is it conches the cards so it can hold one or six just as firmly.  I have had mine for two months and see no I'll effects, however a man that saw me with it asked if it beat up my cards and made them break.  I do not know that this is a problem but you may want to research it before you buy if you are concerned.  The clip itself is very good, holds one bill as well as it holds ten.  Surprisingly flexible and sturdy at the same time.  I was worried it would lose it's springiness but it has not.