All of the new models use the new textures (ad_*, gem_*, etc.) that come with the downloads. The Reforged models do not use
any default NWN textures (or textures with the same filename as default textures).
All of the screenshots I take for this thread and the Vault pages use the override version, with models, textures, and tga icons in the override folder. I haven't come across any that were showing the "missing texture" chrome look. New models in the override folder can and do use textures that are found only in override...they don't have to override default textures to be used by the game.
The steel is noticibly brighter then the default steel texture, but that doesn't sound like the problem you're having.
Also, if you added in the Reforged textures to the override folder while NWN was still running, you still likely wouldn't see them. I've noticed NWN doesn't load art assets (like textures, models, or icons) from updated overrides or haks unless those are there when the program starts. I get the same issue with the toolset...I always have to shut down NWN completely and restart it if I'm updating something visible.
Hope we can figure out what's going on soon. I'm definitely biased, but I wouldn't go back to the old weapons after using the Reforged ones.