Last week the bish tactic on the Grinder map was the following: they all got together, came in amazing numbers, at high altitude, totally blocked a field, took it lightening fast, disappeared as soon as they came then showed up in a different location. We had minor chances to find a fight/furball/interception, call it anything.
I have to say, they were clever and scary organized. The only problem, they were clearly trying to avoid every contact with any enemy who can defend himself with at least a minor chance.