I asked Support if jumping on roofs and shooting from there in missions would be ok:
Hello,
since I recently got the 4x4 Vegas, I was wondering if it's a bannable offence to use spots like shown in this video: www.youtube.com/watch?v=U1P8VWtuiEI In missions (including the invisible roof above the skate park in Financial).
I want to do this as kind of a "stream special" and again, was wondering if I can get banned for using spots like these in a mission.
In my opinion it should be okay, because wherever I go, people can shoot me and I can shoot them.
-Kyl3
Their response:
Thank you for contacting APB support. I do not see why that would be a bannable offence. As long as you are not griefing or hindering other players it should be fine.