And there are skills which are not given by multiclassing, for example my gnome wizard wanted training in sneak because it is important for hiding and for moving invis undetected (if you move inivis you have to make stealth checks vs passive perception to not be 'heard' if heard they can attack your square at -5) but multiclassing thief gives you thievery as a trained skill not stealth. So no, it is not a fluff only feat.Mustrum_Ridcully said:It depends. You can take the multiclass feat only once. If you know you want to multiclass and happen to need the skill, take the multiclass feat. If you don't know in what to multiclass yet (but think you might want it later), or if you still don't have all the skills you wanted, pick Skill Training.