Experience: I got stuck hanging naked from a tree

Hi guys, I've done several removals this Summer; but I got an interesting call today. I've always wanted to see a free-hanging hive where the bees are not in a cavity. It's just been a curiosity to me that bees do not necessarily need a cavity to have a thriving hive. Anyway, an apartment complex called me today with this very situation. They are sure it isn't a papery hornet's nest.