Hello! The latest version of the Skinning converter (the one with the skinningconverter_utility) can't be exported as a skinned mesh with Fbx Rop. And in Unity, it opens like a mesh renderer.
It works when you take bonecapture, solidembed and bonecapturebiharmonic out of the skinningconverter_utility. Take a look at the screenshot attached. The left one is working, right one isn't.
I believe it has something to do with how Fbx rop is detecting the skinning.