Right, I was always told that after you have exhausted all means of retreat, and you have to pull, you better pull the trigger when you do. Concealed means concealed untill it needs to be used. Gun waving and taunting will land you in jail and your CHL revoked if you're lucky...worse yet you will more than likely end up in a morgue.
This is just what I have heard of course, I haven't taken the class yet.