I'm not a huge fan of Mircarta but understand why it's being used as it's a good alternative to bone. That being said, if you can get the real thing, why settle for less? My luthier always carves a new saddle out of bone. Obviously, he's a traditional builder with extra reserves of real bone and antlers, he's acquired over the years. It's kind of crazy. So, I like the sustainability of mircarta. I'm not opposed to using Mircarta providing the guitar is setup properly.