The models got matching Hitboxes and Physicsmodel. However on a server it will be the standard hitboxes and standard physicsmodel, this is done by the engine i cant change that.
If the server install the files too, it will work.
You could also try hostage skin plugins like Hostitron, didnt test it.
Added bumpmaps and phong shader effects aswell. Also modified the hostage sounds.
Changed the "run" animation to a more matching one.