I don't think there is any problem on PB side with those scripts. Its just that you will have troubles with implementation for particular weapons. The only weapon it works well with is scout (that's why you see so many 'pro's' with it lol) and maybe Obir as well (and some secondaries like Stabba PIG), but the rest it just doesn't work. Well it kinda does, but you will find your self better off without that thing. For example, shotgun is just horrible and you will do better without it.
You have to keep in mind that you can't really search an area (as the public one does), because you will end up shooting things like joker ammo boxes or backlights of cars (red ones). Also, different weapons have different crosshairs.
As for detection, it can't be detected because from outside it looks like any video capture program. Unless they scan for it like for some hash? But you didn't download some public one, you wrote it yourself, so that's not a problem for you.