I've done some experimental work, yes. However, I haven't found many places where it will obviously help a lot: it's very easy to use it for 3D transforms (whic

I've done some experimental work, yes. However, I haven't found many places where it will obviously help a lot: it's very easy to use it for 3D transforms (which does a pile of 4D matrix ops, exactly what the matrix benchmarks in the post measure), but other things are less nice.