Again, anyone have an extra fascia that I could hack up?

Ah, there's the real problem. Those are rather rare, and as I understand it, the original mold is unusable. So I wouldn't recommend doing anything that might potentially destroy the fascia...

Of course, if you're making your own fascia, that's a whole new story. Then it becomes a question of design.

Still don't see the point in the fascination with quick-change lenses....