I would make sure that my lawyer stressed that the point of having a HD gun is to have the MOST effective gun you can. Handguns are actually poor man-stoppers. Police use AR's when they need to stop a threat quickly so why should someone protecting his family not do the same?
Also, I would make sure he stresses that the gun is there to protect my wife and child (not my "home" or my "stuff") and they are worth using the best thing for the job. I would have him put giant pictures of my wife and son's face up on easels in the courtroom and remind the jury "THIS is the reason that HH uses an AR. If it's good enough for the police, it's good enough to use to protect the lives of these two". That should help all the bleeding heart XX crowd understand why someone would use an AR.
MY HD gun is also FDE. This seems like a small thing, but it may look less scary than black?
In the end it's better to be "judged by 12 than carried by 6" and the AR IMO gives me the best chance to win that fight. I'm not too worried about being charged for a good shoot here in OK. However, I will admit that if I lived in a blue state, I might actually consider going the mini-14 route because way too many of those people are simply devoid of reason.