I know several brigades in urban areas that don't have MFS back up would use it, especially so that you know who is coming, what skill set is coming and if you need to add another brigade straight away or you know that you will get both trucks out with BA, and you can mix and match the crews better, instead of all BA and drivers on the first truck you know to leave certain people to take the 2nd truck etc.
Bring it on I say.