Wait wait, hold the phone. There's a plugin that lets me use Photoshop 3rd party filters?

Yeah, maybe we still don't get those layer effects, but this remains quite cooly awesome!

(I suspect that if GIMP is to ever really have layer effects, it's going to have to build this in from the ground up in a later major release, which I suspect will not be easy, and developers working for free can't be expected to do something that daunting very quickly.)