That is great to hear, I know how much of a challenge that must be. I remember hearing about when Trip Wamsley got his 0 radiused, 32 inch, 8 string Alembic made and trying to make sure the B was strong in a shorter scale.
I've only tried one CB (@ the LowEnd), so I can't remember if the headstock is angled or not.
I believe he only does angled headstocks.