I play a Tempest with 6 runes of radiance…When i put my armor on and off the duration of my auras do not change & the #6 attribute says increases aura duration by 33%. These are weapon auras like shocking aura and frost aura…and secondary auras like Aftershock with magnetic aura. I am also traited with powerful aura…turning that on and off does nothing and taking off tempest does nothing…so no auras have their duration increased.