Well... no answers made. I\'ll try to answer myself, although I don\'t have the complete information.
I\'d say that there\'s no difference, currently, between any of those swords, that is, they\'ve the same slash and speed so the ratio (slash/speed) is the same for all of them.
That said, I agree that, if you\'re trained in a certain way of magic, that should too empower the magic that the sword has, but again, magic isn\'t at all developed in the game mechanics. We should look into the code now, to see if the magic abilitie of the player is taken in account in the ecuation to determine how hard one hits with those \"special\" swords. For the time being, I\'d say that this part isn\'t in the code, that said, keep in mind, for instance that, theoretically, the slider bar stating the amount of power you put in each spell is indeed implemented in the ecuation of the spell power, but since the currently implemented ones are so weak, we\'re unable to really notice the difference (we only know it may be working due to the drop of probability to cast it correctly, not by the extra effect of the spell itself)
So to sum up, unless someone else that has got an in depth look at the code comes and states the countrary, I\'d say that, currently, those swords would serve you equally no matter what your skills in this or that magic way are.