Yeah, but it just doesn't quite manage to Compiz/Beryl feel. It is difficult to put a finger on but whoever did Compiz wobbly windows had an eye for it that the KDE devs don't.

Using both, I can't imagine getting excited by KDE wobbly windows in the same way that Compiz could get a "wow!" by demoing wobbly windows -> desktop cube.

It was a short, beautiful peak of Linux on the Desktop where a high was reached and then desktops just fell away from it.