If you actually want this wallet, you'll care about this part first: I'm at 3.0oz fully loaded with as much cash as you can lay down at the cheapest no-limit poker table in the Bellagio, 6 cards, 2 office/garage entry badges, and a dog poop bag. Too much s***, but nowhere near Costanza levels. It's compact and refined, and will keep you that way.
I used to carry a sleeve-type wallet after I decided that my "pocket dieting" (periodically reducing what you carry) should become "pocket anorexia" (systematically carrying less). It was great, but a little... lacking. Like wearing "elegant man sandals" to dinner on a tropical vacation. It'll do, but you find yourself wondering if you deserve to be taken as seriously as the guy who bothered to bring real shoes.
This wallet is a step up from the sleeve... You won't preclude better service when you pull it out at your favorite hotel, casino, bar, or Michelin-starred restaurant.
The craftsmanship is superior. Stitching at the ends is loose, but the leather is only getting better.
Bottom line: It'll last you 5x longer than you'll need it to, and will never make you feel inadequate when you whip it out. That's the measure of what belongs in a man's pocket.
[Edit May 2014] The leather may have gotten better, but the stitching got worse. It frayed in four different corners. If you're doing the math, that's 25% of all possible corners in a single-fold wallet. I contacted Bellroy and they advised me to request a warranty return from the retailer, who in this case was KJ Beckett (via Amazon). I was disappointed by the runaround given to me by Bellroy, but KJ Beckett provided excellent customer service (5 stars for them). Today I received the replacement, which appears to be a revised model minus the pocket lining that was a liability anyway. I'm hopeful that the stitching does not fray, but there appears to be no design improvement in that area. Given these issues, I can no longer recommend this product. At $80 and 1oz, it costs 4x more per ounce than pure silver. Think about that.