SA is alot easier to have a ND than a DA, simple reason being less travel and less force excertited to press the trigger. with proper training this wont be an issue even when addren/stress are involved because of muscle memory, derived from constant practice after being taught the right way to draw, engauge target/targets, secure area and reholster with out ever having a ND. If you are interested in some basic to novice training, let me know. regardless to being DA, SA or DAO, you just proper training.
~Drew
~Drew