I've had this wallet for about a month and the leather is breaking in nicely, with that slightly tacky feel of good vegetable-tanned stock. Card slots are snug at first but loosen up, and it's slim enough that I forget it's in my back pocket.
The vegetable-tanned leather already feels softer after a few weeks in my pocket, and it's aging into a nice darker tone. Card slots are snug at first but stretch out fine, and it still stays slim with six cards in it.
The vegetable-tanned leather has darkened nicely in the two months I've carried it. Card slots were stiff at first but have loosened up well. Only wish it had a coin pocket, but the slim profile makes up for it.