Not just leather, but eating meat as well. It seems logically inconsistent to me that someone who kills animals for food would object to killing similarly intelligent animals for clothing.

Both largely come from factory farms, both have non-animal alternatives that are almost as good, both result in a lot of unused animal carcass.

If anything, a fur coat made from two dozen foxes that lasts ten years results in substantially less animal death than a meat diet over that same timeframe.