Multiple 'Projected' textures?

I am rendering in Thea Render. I would like to use projected textures for my spaceship. Panel lines & surface detailing works fine in Thea (at my non-ILM level), since I don’t know how to create UV maps.

My question revolves around the fact that I would also like to add ‘projected’ specularity and bump maps to the same areas. Is there any way to do this?