@Joshua
I don't know to whom you've talked but we don't have stencil shadows support too, sadly. I would love to beeing able to choose between more than one shadow solution due to a different style. As for performance issues i guess you already know on your own that this heavily depends on your scene and how you're setting things up. Anyway i can't offer a demo.
By the way are you the person who was trying to write a 3d engine for GeForce8800 and OpenGL only?
I don't know to whom you've talked but we don't have stencil shadows support too, sadly. I would love to beeing able to choose between more than one shadow solution due to a different style. As for performance issues i guess you already know on your own that this heavily depends on your scene and how you're setting things up. Anyway i can't offer a demo.
By the way are you the person who was trying to write a 3d engine for GeForce8800 and OpenGL only?