There are restrictions on what you can put where, DoLand jobs can only use DoLand stuff, DoHand stuff gets DoHand stuff. DoWar and DoMagic can use -some- of the abilities of either DoW/DoM and you can refer to each individual skill to see if it can be equipped by something else. It will say something like Requires: "............" If it requires Conjury then you can only use it on Conjurer, if it requires DoW/DoM then you can use it on any of them, and so on.