Sure is a pretty J body, but I doubt Alembic had anything to do with it. For one thing, it's a bolt-on design. If memory serves, in past threads, Mica has indicated Alembic doesn't have any experience in bolt-ons. Now, she was referring to bolt-on necks - not bodies. Clearly routing a neck pocket is not rocket science - However, in other threads, the Alembicians have declined requests to build parts to be used with other manufacturers' components because they could not guarantee the final performance.
All that said, I'd love to know if I'm wrong about this one...
Bill