True story, some friends of my wife came to visit our house. They were traveling by RV and had two Rottweilers with them. They were not well trained in my estimation. They let them out of their RV, I went and strapped on my Smith&Wesson .357. "What are you doing?" "My kids are here. I'm not going to fight with your dogs if they attack, I am going to kill them". This made sense to them and we had a nice visit.
I have no problem with your actions.
All pets should be educated, just like children. These days, a well trained dog is slightly more common than a well behaved child.
However, people who would take on a large dog of any breed must show the same responsibility as a concealed carrier must.