I was only briefly involved in the SCA, and that was a long time ago. But I seem to remember that injuries there are non-existent to rare as well.
I have never been involved in boffer fighting. I have just seen it a couple of times.
Cheers, Ben
"... I couldn't see how anyone could be educated by this self-propagating system in which people pass exams, teach others to pass exams, but nobody knows anything." --Richard Feynman