I've traced down the problem, just when I about gave up hope. It's the NiMaterialProperty under the Right Foot NiTriShape's color settings. If any of them are white, it gives the strange glossiness and broken texture. If all of them are black, the texture isn't white, but is completely hidden by black. I'm going to try to fix this by fiddling with the color settings, and I hope I succeed. Probably not. But still, Bahamut, do you think you'd be able to fix it knowing the source of the problem?
Edit: Okay, that isn't the problem. But it's changing the problem. I suspect something regarding the way the mesh refracts off of light is leading to the issue.
Mabye try doing this for diagnostics
-Delete all trishapes and NiTextureEffect leave boots only, remove both NiMaterialProperty and NiTexturingProperty, attach new previously deleted properties and apply base texture, if the problem remains still, it will at least tell us that its model itself, go check the boots ingame (rest of the armor will be invisible because we deleted it in the process