I don't see why a reflex set wouldn't work on one of those skills, I don't remember seeing anything saying they couldn't, although from my understanding reflex sets don't reset the cooldown for a skill, just reduce the cooldown by 1 turn when they activate. 

You might be thinking of the refresh accessories?

Its only reduce by 1??? i thoght fully reduce..

I ask because i tried around 30 times with Renegade and it didnt reduced and i didnt use her other skill..