Yes, actually. It's in Gatecrashing. I won't spoil it, but for once the Oversight agent(s) aren't the scheming villains. In fact there's a suggested plot hook for an unprecedented alliance between Firewall and Oversight (temporarily, of course ). What would bring them together exactly? Read the book :>On the topic of "odd couple" type match-ups, have any of the EP books touched upon what is likely to happen when a Firewall crew tasked with dealing with some Random Existential Threat bump into an Oversight team doing the same?