Zanth,
I flew with bish when I first started. My problem with them was they would leave a fight the moment it looked like they were going to lose the advantage. Typical sortie for me was upping at a base under attack. Up, fight, kill, die, up. Then after a few moments I would notice that the numbers of friendlies would drop. Then what started out as many bish would end up being just 4 maybe 5. The rest would leave to go attack an undefended base. I do miss the bish missions though.