When used with Serpent's Quickness, this skill can be kept up indefinitely. This skill can alternatively be used in conjunction with "For Great Justice!" in PvE for indefinite 100% adrenaline gain duration.
While it won't stack with other adrenaline percentage skills beyond 100% (see stacking) it will increase additional adrenaline gained from skills such as Dark Fury and Mark of Fury which give adrenaline strikes.
Combined with "Save Yourselves!", this skill can be used on a PvE Paragon for a drastic and maintainable partywide (minus the paragon) armor increase.