In a private message, Bart Leech asked me:
Frank what is it that scares you about the RAS ? No I am not trying to be funny just trying to understand. What did they do or not do that has you so scared of them?
I figured it might be worthwhile to make my response public. Here it is:
My main source of discomfort is when using them for ripping with the blade coming down from above and (somehow) trying to avoid kickback. It's a long time since I did such an operation (about 30 years), but the only serious kickback that I ever experienced on any tool (in fact, the only injury) was on my neighbour's DeWalt radial arm saw while I was ripping a piece of maple. The maple flew back and hit me in the jaw and chipped two teeth. I had a sore mouth for about two weeks.