Was wonder what are the best leathers for the inside of wallets. I've had some success with using 3oz to 4oz for the interior and exterior shells and a 1.5 to 2.5 sheepskin I get from Tandy for the card pockets. This works ok, I like how thin it is so it keeps my wallets from becoming to bulky, but the sheepskin is so supple it can be kind of hard to cut my pocket edges square and I often end up with the panel not perfectly lining up on the edges. What materials do you folks use to keep your wallets nice and thin??? Thanks a whole bunch!