LOL.......that is too funny carrying your purse.
Well, if we are divulging into other breeds now, I can say that Gunther is much more protective than Keiko. She is only protective when she needs to be, which is rare. She barks at the door, and when traveling doesn't like anyone coming up to the car when I'm taking a nap. But other than that, she's the most friendly of dogs. Aloof, but if you acknowledge her, she'll come up and say hello.
Gunther, on the other hand, will bark at anything and everything. He has gotten better with training, but he will never stop entirely, which is okay as long as he doesn't get carried away. He'll let people pet him, but he won't go up to them unless he knows them, and sometimes won't let people come up to him at all.
But as for true protection, if and when I would need it, I could count more on Keiko than Gunther. He may be big and sound like he's tough, but he's mostly bluff, and if you call his bluff he will turn tail and run. That may change as he gets older, but for now, he's a chicken in dog's clothing.