Comment 7 for bug 412928

Yes. This would be extremely useful for me. The image I'm working on right now has one big shadow on it, which has much heavier blur in one place than others. That means it has to be two objects. Trying to line up the edges of two blurred translucent objects so they look like one is nigh impossible. It'd be much easier to just use a duplicate of one as an inverse clipping mask for the other.

I find myself wanting to do this quite often; the usual solution is to create a big blob around the two and cut out of it. But inverting a clip mask would be much cleaner and easier.