I have one as well, I’ve owned numerous GSD, dobes, etc., this one is far the easiest to train, and the athleticism is off the charts. Mine is from a pretty high end line of sport and working dogs, and very social, while extreme in protection.
The biggest problem with these is that they learn fast enough that you have to NEVER let them get away with anything. Great with kids, but big time bitework.
Sadly one Belgian Malinois K9 was left attended and the LE’s son lost his foot as a result.
http://www.ocregister.com/articles/dog-651051-police-boy.html
The dog was not put down but it’s unlikely he can go outside the kennel without a muzzle.