To give you a little perspective from the placement challenged, my QS4s are arout 3-4 inches from the ceiling, slightly ahead of the listening position. It's certainly not ideal, but they sound much better than I expected when fed from true 5.1 or 6.1 sources (no DPLII or DTS:Neo6).
Everyone's going to laugh their butts off, but I just watched my first action movie with the Qs (it's been over a year since I got them) and they sounded fantastic, even being mounted that high and that far forward.
They are roughly the same distance along the wall, and the same height from the floor, so YMMV. And they're not that far forward; within the 15 degree spec that Axiom gives.
