Just bumping this as it is still an issue, you have to use this extra material otherwise for non-gray schemes in F1 view you get a gray stripe below the canopy because the texture is still default.
Also the roughness_metallic properties of the canopy in F1 are not the same as the external model, despite me setting them to use the same texture. Hope this is fixed in the future, as the mismatch doesn't look good in VR.