Well your in the right forum for what I suggested.
Basically you run the mod but the configs will need to be adjusted to make it so that it applies globally
if Im using the correct terminology.
you'll need to extract the pbo files for that addon and post the configs and whatever files in there.
Im concerned that it should be ok as long as you dont redistribute the addon as your own or rather anyone else would you get in trouble here.
But my suggestion is to get a hold of the author, send him a pm on the forums here, and then post the configs and such and see how you can
make a script so that the textures are applied to reg soldiers.
another problem poses
that this addon are basically model, so it may not work, idk.
But heres a direct link to the thread for the addon you want to use, ask Binkowski himself and see what he says: