When I last did TRs at an org not too many years ago there was a "no touching" policy in effect. However, this was the STCC and not one of the more advanced courses.
I thinks it's largely due to TR 0 BB that I'm very difficult to offend. That's good in one way, on the other it has sometimes made me come across as really strange when people have offended me in front of others and I've just stood there taking it.
"If you really want to hear about it, the first thing you'll probably want to know is where I was born, and what my lousy childhood was like, but I don't feel like going into it, if you want to know the truth."