Currents would be better than pathtwist if pathtwist was blocked by all the things currents currently is and still functioned in the same way. Those things are the two ways you avoid currents, which otherwise forces you out whenever it damn wants. Pathtwist can only move you on certain actions, and costs 5 power to set up in a room (which is wasted if it's broken.) Pathtwist also has a low chance (if there's one path not being stacked) on its own, unlike currents when factoring out summon resistance.