3D objects in the HUD

I'd like to place 3D objects in the hud as the topic title suggests, but my findings so far are this:

The Ortho will only show objects on the single Z axis. (I'm guessing a 3D object but only where it intersects).

Someone suggested : the UI: BGeomView

but I can't find any reference to it. except for one mention in the forums.

And lastly, this might be my only option, is to setup my own passes and do multiple passes to do the same.

So is my only option to do the last one with multiple passes?

I generally use RTT to render the object and paste it on a UI quad.  Basically an imposter.