Does Swift Cast work on any skills?

[Kaurie]

Which is such a tiny number that in order for it to have an effect, you'd need at least 2 minutes of uninterrupted slow to have a noticeable decrease in damage. Awareness negates more damage in 15 seconds...

Awareness has the potential to decrease damage more, but it also has the potential to not decrease damage at all.

5% is not insignificant, but it obviously shouldn't be relied upon as the only form of damage mitigation.