Interesting thread. According to my AME, it does not matter what the outcome of any alcohol related driving offense (charge) is. To the FAA they are all the same in that they exist and MUST be reported. He did tell me something important and that is if you SHOULD ever end up in the unfortunate position of being stopped and given sobriety tests, NEVER refuse the request for a blood alcohol test. The FAA considers this a very serious infraction and elevates the situation to a whole different level in their eyes and will make it MUCH harder to jump through certification hoops in the future.
Just FYI.