I love leather. I'd take leather any day. The problem I've found, and unfortunately Saddleback is no exception, is that leather bags don't have the internal organization that nylon bags do. I'm not talking about webbing on the outside, which I rarely use anyway, but pockets and pouches inside. Most leather bags are just a big open hole inside. I'd love to see someone making Maxpedition/5.11 type designs in leather. I'm sure they'd be $1000 per bag and I wouldn't be able to afford them anyway, though. I know leather is heavy, but to me it's worth it.