I was slightly hesitant after reading some of the reviews out there, but I must say I do live this wallet. It is so thin, I can actually leave it in my pocket all day and forget about it. Very strong and light. I've got about 20 cards jammed in here and it's still thinner then my previous wallet when it was totally emptied out! at $15, you can't go wrong.
EDIT:
6 MONTH UPDATE. Still loving this thing, it's still going strong. No worries about cards falling out or any such nonsense. It's starting to get a really weathered look, I'm thinking it might need to be replaced in another 6 months.