I'm in the same scenerio except with two Chow Chows. Everyone thinks of them as agressive dogs. They are when they need to be. Same things happens when someone comes to the door unexpected - hair stands straight up and they'll make it known that they're there. However, with proper training and socializing at a young age, they're great around others, even kids. Don't believe me, check out this link
. We have nieces and nephews that come over all the time and play with our Chows. And last weekend, we took them on the MS walk; thousands of people, no problems at all.
I always find it amusing when I open the door to the alarm-system sales people before they even touch my doorbell. Then I ask them, "Can your system tell me that someone's coming like mine?" :ROFL: Ah, good times.