Sort of. I used to have two males, one was very sociable while the other preferred to be left alone. Well, one day my ex decided to hold Oscar (the anti-social one) while sitting on the couch, while Felix (the social butterfly) was hanging out on the top of the couch just above my ex's head. A few minutes after sitting down, my ex was suddenly attacked on the head by Felix, who then proceeded to pounce on Oscar, all the while displaying the blackest beard we'd ever seen on him. Of course, Oscar had no idea what was going on, so he stayed put. Well, that pissed off Felix even more and he charged at Oscar with intentions of pushing him off, which almost worked. This went on for a couple more minutes until Oscar finally got the hint and ran off to the other end of the couch. It wasn't until Oscar wasn't moving anymore that Felix finally calmed down, and proceeded to walk over everyone sitting on the couch.
So, yes, I'd say they're protective of their slaves. But then again, they were the odd couple and did things that weren't normal of beardies.