Right usually. It's an offensive spell so I keep it in the weapon hand so I can still use a shield. I always forget about Pyro tbh. If I'm upgrading INT for pyro I almost always end up using sorceries instead because they have more range use and weapon buffs.
Come to think of it...They really should ahve made a pyro fire buff for weapons. What were they thinking? --- Gonna be awesome: http://playstarbound.com/