For PvE, I have 2 Hammers. I have a Heavy/Furious/Fluffy Hammer of Defence, and an elemental (Ebon or Shocking for preference) Hammer of Defence to switch to when fighting physical-resistant enemies, or when Mursaat use Physical Resistance. The same thing would work for swords I'd wager.
^^^In truth, I just switched my 'main' hammer for Malinon's Skull Crusher, and my elemental is now a hammer of Pruning, 'cuz it's funny.
So, yeah, an Elemental switch weapon rocks.
