no I ask usually others that are training police or cops in k9
sabis at that time around 6 years or so ago i was looking for a strong dog for serious personal protection work but the breeds I was interested in trying I researched and looked at but they could not do it went to a few clubs and talked to and met with some experienced in training k9 or pp and talked to a few people in psa, I did a lot of looking i had shepherds in the past and really wanted to try something new for this didn't work out tho I really did not want a mal. Shepherd worked out with flying colors though. My next dog will be shepherd again I think.
Having worked with several patrol/protection dogs over the course of 15+ years, my only choice would be a GSD.
For their forgiveness of training hiccups, for their ability to discern a real threat, for their varied capabilities, for their hardiness and patience and for the willingness to work at a seconds notice, with or without food, sleep, shelter or equipment. It is that cool head in the face of chaos, that unfailing devotion even when it would be smarter to cut and run, the sense of humor that makes them grin when they scare people, that pig-headed tenacity that will get their handler out safe every time.
They are the masters of intelligent disobedience when they know they're right and your wrong, and they teach themselves continually. Like learning to turn around and watch my back while I unlocked doors, or shouldering me instead of making noise to alert to human presence.
Maybe not the fastest, the strongest or the most agile but all around they don't make any better.