Awww, the joys of raising a well adjusted pup
I just got another one last week, to replace my Rhodesian Ridgeback who died last December.... He's a 9 week old "calming down" terror right now. I still have my other two, a Presa Canario who's almost 8 yrs old and a GSD who just turned 4. Both were raised differently and I'll probably raise the new guy a different way, too, as training methods are constantly evolving and it's good to keep up with new ideas and tools to make the job easier.
What I have found is the toughest thing about raising a well adjusted dog is finding that fine line between letting them be a puppy and teaching them manners. I had intended to send my GSD off to her breeder for formal training, but those plans fell through, so I never taught her formal OB like my other dogs. That doesn't mean she didn't learn manners though, or won't do what I tell her to. The main thing was I never let her get away with a behavior I didn't like. You need to be consistent and train your friends and other contacts to be consistent. If you don't want your dog to jump up on people, they can NEVER jump up on people. Same with the leash training. I've had Petra on a leash maybe 2 dozen times in her four year old life, but I didn't let her pull as a puppy and she knows not to pull as a strong adult. It's much easier to correct them and show them the correct way when they only weigh 20 lbs.
On dogs in general.... I have never heard that GSDs are prone to turn on their owners.... BUT there are a lot of poorly bred dogs out there and GSDs are one of them (read popular). There are definitely alpha aggressive dogs out there who would turn on their owners in a second because they never learned their proper place in "the pack", to quote Cesar Milan. Also, dogs are 80% genetic and 20% environment, so you can only do so much with a pooprly bred dog. On the other side, a well bred dog has a lot more latitiude and isn't quite
as hard to ruin, but they can still be ruined. It's the good ones that make good rescues and the poorly bred ones that are put down.
"I'm not sure if he is protecting me during the week and knows that "Daddy" can protect me on the weekends, or if he is a big chicken and thinks I'm not doing as good a job protecting him during the week as Daddy does on the weekend!"
The latter part of your statement. You hit the nail right on the head. Your dog feels more secure when "daddy" is there and trusts him to sound the alert. Especially an unwarranted alert like a simple noise at night that's there every night, like a creaky house. He does not see you as a pack leader and is barking at an unseen/unknown threat trying to tell whatever is out there that he's boss. But really it's like the fat kid playing the part of the bully. Deep inside your dog is insecure and daddy isn't there to ease his mind and tell him it's nothing to get excited about by his inaction
. Dogs pick up on cues and if he sees daddy not moving or bothered by a noise, then he will relax and let it pass much more quickly. GSDs seem to go through more fear periods than other dogs, but I like to think it's because their minds are so complex and they are so intelligent.
Bottom line is, even though you don't have time to formally train a dog doesn't mean you don't have time to teach it manners. You do that just by living together.
And, one good correction is worth a thousand nagging ones. Be fair, firm and don't act out of anger.
At least that's my take on things.