orthographic camera with deferred lighting

When I enable “orthographic” in the camera settings the camera is rendered with the forward rendering path even when I explicitly enable deferred lighting in the camera and player settings.
That means no shadows on point lights are visible.

Is this expected behaviour or a bug?
How can I use an orthographic camera with the deferred lighting rendering path?

I’m using unity 4.2 pro

Explicitly stated here:

NOTE: Deferred rendering is not supported when using Orthographic projection. If the camera’s projection mode is set to Orthographic, these values are overridden, and the camera will always use Forward rendering.