The QS interface and multiple screens.

I often use multiple screens, and sometimes I need to invoke QS while
I'm working with my secondary screen. This, of course, pops the
interface on the MAIN screen, which in turn forces me to take my eyes
off the screen I'm working with. I don't know if this is the right
place for feature requests, but I'd like to have the possibility to
open QS either on all screens simultaneously or just on the screen
where the mouse cursor is.