KBS is the only CC i use these days.. i did do a thread on it way back but buggered if i can find it now.
Ive used it over enamel.. acrylic and acrylic lacquer... hasnt reacted with any paints so far.. but... i wouldnt roller it as you cannot guarantee that it wont trap bubbles.. spray or brush are OK, just make sure PF is dead level before applying as it self levels.
Drying time is akin to polyurathane.. cant touch it for at least 24 hours... fully hardened after 7 days