kiai with atemi?
One senior person at my dojo regularly uses kiai during atemi or break falls etc. but otherwise we are a pretty quiet bunch. My bone to pick would be on the "self defense" side. I have never seen/heard any practise of verbal commands in a defensive context in an Aikido Dojo. Police training regularly includes shouted commands (kiai) like "BACK-DOWN", "stop resisting", or "get on the ground" etc. It is common sense to practise "non-violent" commands as an alternative to slugging it out with a suspect. They even obey sometimes and it looks better in court.