Linear Lighting - Lightmap Fallback

The Unity Docs state:

"Even though these targets support linear lighting, it is not guaranteed that the graphics hardware on the device will be able to render the scene properly."

Found here: http://docs.unity3d.com/Documentation/Manual/LinearLighting.html

So basically, my question is:

Q. If you have baked a set of light maps in linear space, is possible to fallback to gamma space with them looking correct?

Not sure if this will be done in shader, or you have to use bypass sRGB sampling etc.