oh, by the way, is it possible to cache the layered texture or any shader
with the alembic?
The only way I can think of doing this is by adding to the geo some "foo" attribute, connect to it the shader attribute I want, and cache that "foo" attribute.
Then in the alembic scene I import the shader and connect the attribute cached to the shader's one.
This works pretty well, but I wonder if I am missing some option that will cache the shader and its's attributes as well