Guild Wars 2

With the reveal of all skills, I started working on the quickness rotation and the required boon duration.

Mantra of Potence and Mantra of Solace every 12 seconds is mandatory, but we can use either Feel my Wrath or Mantra of Liberation for the elite slot. Feel my Wrath is easier, because Mantra of Liberation requires keeping track of a hidden cooldown, and requires alacrity to work.

Sigil of Concentration has great synergy with firebrand, since we share quickness every 12 seconds and thus we can afford to weapon swap every time we do so. Still, I provide numbers without the signet for reference.

(The %number is boon duration, the number in the parentheses is the same in concentration.)

Raids

64% (960) -base-
57% (855) w/ Pure of Voice
55% (825) w/ alacrity
47% (705) both

Using Sigil of Concentration
31% (465) -base-
24% (360) w/ Pure of Voice
22% (330) w/ alacrity
14% (210) both

Fractals
Things are easier here if you are using the Mist Mobility Potion. With 150 AR, you get 225 concentration, which 15% boon duration.

49% (735) -base-
42% (630) w/ Pure of Voice
40% (600) w/ alacrity
32% (480) both

Using Sigil of Concentration
16% (240) -base-
9% (135) w/ Pure of Voice
7% (105) w/ alacrity
0% (0) both