Sheath question
I recently bought some knives that did not come with sheaths. There is a Amish guy down the road from me that works with leather and I was going to get a quote from him about making me some. Another friend of mine said some types of leather will cause the blades to rust. Is this true or is it just how you take care of the blade. I have some knives that are stainless but others are not. Is there a certain type of leather to use or is it a case of leather is leather is leather??