Actually the reading of these images was easier to incorporate directly into mwgfx.dll
Download the latest version and you should get 4.00.215. This now reads .texture files (or at least it reads the ones I dummied up by adding 48 bytes to some DDS textures) and displays them as DDS ..... (nonstandard)
So with this version installed TView and Show should display them. My Enhanced Thumbnail view will also display them (though you may need to add the extension manually). Even DXTBmp should load them but probably without alpha information.