Interesting interaction with Quickfire (3 stacks of ashes of the just at the same time)

So if you use restorative reprieve (mantra of solace) and potent haste (mantra of potence) at the SAME TIME while having the traits liberator's vow, stalwart speed, and of course quickfire, you get 3 stacks of ashes of the just at the same time. I believe this works because you gain 3 sources of quickness at the same time so it allows you to get 3 stacks all within the same ICD. And obviously not only does this go for you, your nearby allies also get 3 stacks.