I don't understand what you're saying about specular maps for the figure. Why would a specular map need to come from a different viewpoint? The Sphere_Map node implements reflection angle lookup - it does not use the simple surface normal the way diffuse mapping does. So even with exactly the same map, you get different results from a map plugged into the Sphere_Map node.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)