KSB Aggression?

My roommate and I were browsing the fish supplies at Petsmart and then decided we wanted to hold a couple of the snakes. My roomie's really inerested in getting a KSB, so she asked one of the employees if she could hold one (we'll both be going through breeders in the summer, btw). He said that the KSB was in the back digesting; apparently he/she ate the other KSB in the enclosure, and a corn in the enclosure next to it (single tank separated by partition. Since this occurrence, they now house one species per tank, no partitions ).

I was wondering if any of you have encountered or own(ed) an aggressive or territorial KSB? I've only ever heard of Kings eating other Kings and snakes.

Thanks!

My friend was housing two rubber boas together and the same thing happened. And from what I have read (correct me if I'm wrong), they supposedly like to curl up and bask together. So I guess you are always taking a chance when housing two snakes together, regardless of the species.