Thanks again guys for your comments !
Hey Juraj, yes it's still that client from London (some jobs just keep on dragging on, arghh) . As far as those reflections go I remember that I did tinker with them in Photoshop a bit but I hadn't rendered the still on black, well, sort of, I applied that bitmap in the Direct visibility override slot. I basically didn't want to add the background in Photoshop and add the reflection pass on top of that as I would've gotten some AA issues, I noticed that even perfectly outlined black and white masks don't always give perfect edges and that's why I tend not to use them (on projects that have to be done in a hurry I still use it though ). I will try your method as well to see how it works !
Cheers !