Its doable, I done the same a few months ago, I even got a friend to retexture me an outfit in FO3 (Paulsons outfit) to look like ocelots, he would of posted ona mod site if NV had the out fitmesh in its data files.
If playing on PC I would recormmend this mod for the revolver idles animations
http://newvegas.nexusmods.com/downloads/file.php?id=38527