For me Knize Ten was an acquired taste, but it was one well worth acquiring. The dry down is so warm and smooth.
I really like Montale oud Cuir Arabie too, as far as leathers go, but it's also not a crowd pleaser.
SMN Nostalgia is one that's often forgotten but it's very easy to like IMO and has a cool bottle. It has a big leather note in the opening with wood and gasoline, but it mellows into something very pleasant pretty fast.