That trait is perfect for Vis. The development of techniques is going to be much easier now. I am more than certain that our characters will end up in Skypiea sooner or later and when we are there I will have the dial upgrades applied to Vis's katanas. I am going to go with the mist upgrade seeing as this new trait will make it possible to produce the mist and then launch it away with the compressed air. Its physical state would look akin to an arc of moving clouds.