Actually it's kinda buggy, the overload will toggle off automatically if you completely deplete it ....but if you fail to deplete it and it stops charging just below enough to use the skill then you will have inadequate ultimate to use but it will still be toggled
Aett_Thorn wrote: »Using this ultimate replaces your light and heavy attacks with different versions. These new light and heavy attacks use Ultimate to power them, so if you run out of Ultimate, even while this is still toggled on, you will no longer be able to use light or heavy attacks, and will need to toggle the ability off.
You get a third bar of abilities while this is on, which is somewhat of a benefit since you can stick it with only the abilities you want to use while it is running.