Geeze Von,I'd almost think you know a thing or 2 about dogs! 
People must realize there's a difference between a gaurd dog and a personal protection dog,first most gaurd dogs can be just about any big ole mean nasty territorial dog.I even saw an Afgan hound that was a junkyard gaurd,didnt look all pretty for the show ring but he'd tear you up in a second. This kind of dog isnt a pet and shouldnt be a pet.
A well trained and confident PP dog is something to see,they are no different than any well trained dog until it's time to go to work. I've only had 1 dog trained in this manner and she mamaged to trap a police officer in our resturant.Dad forgot to lock the door and the cop went in to check on things and well rather than shoot the dog he locked himself in the washroom! 
His partner came to the house and woke Dad and asked if he could help his buddy out of the place,my Dad said"he's not in there with the dog is he"? Well I'll have to get my kid as he's the only one who can call the dog off!
So I rescued the cop and all he could say was"Damn fine dog you have there,if I hadnt heard her nails on the floor she would have got me"!
This same dog was just a overgrown puppy when she wasnt working,when she went to work I put a "work collar" on her and she knew what it meant.

thats awesome

reminds me of my Dog Juma, he was half Black Lab and half am-staff, I am no professional trainer, but I can train my dogs pretty good....
a neighbor wanted to bring some sandwiches over to the house one day, I sometimes let Juma outside we had 3 acres he loved it and stayed by the house most times, he was about 8 months old when this happened, so the guy walks down our yard and here comes Juma from around the house, he was a very dark brindle, big.... about 80lbs....the guys says Juma came from around the house and stopped he just stared at him with out barking...the guy takes a few more steps, Juma takes a few steps towards him.....he stops..... the dog stops....he steps forward again...the dog steps forward.....he turns and goes home

says to me later...that's quite a dog you got there, never even growled at me...just stared dead in my eyes.
Juma was a great dog Ill miss him forever.