When I was working with Dutch doing his training, it was out on a schutzhund field and he excelled at every one of the obstacles there… I was more concerned about doing protection work with Dutch then I was schutzhund work… you obviously know the breed so I can’t tell you anything you don’t know… for speed and energy the malinios is a superior dog, but when it comes to brute take down force the German shepherd rules…mals will put you against the wall, a GSD will put you thru the wall… both are excellent breeds