I've had this for 8 yrs, and I use it every day. It has held up incredibly well. It looks almost as good as new except one bottom corner is smushed, probably from when I sit a bit sideways in my chair. Zipper still works perfectly, a couple of stitches just opposite the ID window are abraded away (not structurally important stitches though), and the leather is a bit wrinklier over the coin area. I don't have calipers but it's roughly 3/4" thick in the center (and tapers down on the sides) when full.
I'm a slim woman who hates purses and wants to keep my valuables on my person. I am also a mom, so I get to carry ALL the cards: kids gift cards, kids insurance cards, library card, in addition to my own cards. I love that there is room for bills (what do the minimalists do after they use the ATM or get change for that $20?) and room for and coins and misc. (I try to keep coins to a minimum but when I need a quarter for a locker at the pool or earplugs in a noisy bar, it's there in my back pocket.).
The only downside is that, when I need to wear dress pants or a skirt, it's a super tight fit. (The women's fashion industry is notorious for making fake pockets and teeny pockets.) I have sewn deeper pockets into several pairs of dress pants, but I can't make the opening any wider so it is sometimes a bit tight. The wallet does fit most of my jeans--mainly because I check that the wallet and phone fit when I try them on--but wouldn't fit in the micro pockets on many styles of women's skinny jeans.