For purposes of the stock game there is no difference between passive and active beacuse all sensors have the same level passive and active scanning, and all cloaks block the same level of passive and active.
You could complicate things somwhat in a mod by having cloaks that give one level of passive cloaking and a higher level of active cloaking, but it wouldn't make any difference unless you also modded the sensors so they are only passive or only active scanning of different levels.
What would be cool is if there was some inherant differnce between passive and active scanning. Like a ship with active scanners can't be cloaked itself. That can't be done through a mod though. Maybe SE5.
Geoschmo