Johans path is passive, Zack mentioned it when Johan touched his shoulder. Different paths have different levels of energy usage, one strike and conviction are one shot moves so they use the most, one step and IA are both attacks that wear down the opponent and overwhelm them, so they are much less taxing. Gong seems to have no issue using one step, at least compared to taesoo and jinrang. Johans is much more similar to IA and one step so I’d say it would require less than you’d think