I'm going to be honest, I'm not a big fan of leather. I might have some shoes with leather on them, but I usually tend to use synthetic leather in my costumes. For fetish wear I prefer PVC.
However, Tandy has much more than leather for sale. Are you a Dungeons and Dragons player who wants a dragon concho? You're set! Do you want to express your patriotism through star rivets and metal American flags? Bingo!
I usually come in here for D-Rings, conchos and swivel snaps (my significant other makes costumes, and I am a costume wearing nerd at conventions).
The employees are all super friendly, and always greet me when I walk in. I haven't taken any of the workshops they offer, but they seem to have them quite often.