One year ago, we had a whole session with this kind of "1 Big Alliance vs 1 Big Alliance PvP". Everybody said it was boring as hell, major gangs should never restart this kind of thing, bla bla bla.... But the turn of events since our Redding Project led to this bipolarisation again.
Since few days, one side disbanded, but we don't know about the second one. So things will probably change.
By the way I think it's cool to form an alliance, when you meet some trustable and nice guys who share the same vision of the game. It doesn't mean you have to lose your own personality, it allows you and your mates to do something else, being involved in bigger fights, RP,....