I\'m not sure about methods of picking RMs (or whatever you want them called). In fact, that discussion would probably best belong in its own thread, though I will say that they should not be chosen the same way as GMs.
However, there are two points I\'d like to address. First, an RM should not have to bring a GM along on any event. RMs should have all the necessary powers (teleport, mute, etc) to maintain control during events. Firstly, it is a waste of resources to require two people to go along on an event and only have one of them actually doing something. Secondly, I do not think GMs would have fun trailing along, doing nothing while the RMs had fun RPing a story.
Though RMs should have these powers, they RMs should not have a manifesto to seek out and deal with trouble (as the GMs do). In all non-event-related cases, an RM would refer a GM to the problem if possible. Only if a GM was unavailable would an RM attempt to deal with the problem. In my opinion, an RM is not completely separate from a GM. An RM would need some of the same skills in addition to good role-playing.
On the other hand, RMs would not need powers to rename, ban, etc. These are things for GMs. In short, an RM should have the power to maintain order and weave a story of limitless possibilities, but not to deal with major \"police work.\"