I think Zazen did an interesting pyscho analysis on the traits of each "team" one time.
Everyone who starts the game new gets "attached" to their chess piece and as far as they are concerned the other two are heathen scum. All teams are fairly similair whilst some squads who play a certain way do stamp their own sort of culture on the others around them. That has built up over years.
I myself started Knight, had help from various people (they know who they are) and I am grateful to them. We moved rook stayed there for awhile until the LCA missions got too heavy for our tastes. Eventually we tried Bish as they were always our hated enemy. Last year we did 4 monthly swaps and reduced this to 2 months.
EVERY team has its fair share of good, bad and ugly guys, aswell as squeakers, but limiting yourself to never ever fly any other team is just a little crazy in my eyes. It is a pitchfork mentality. Loyalty to a chess piece in a GAME absurd!! i tell you.
All this crap about Rooks flying at 20k BS , ive seen all teams do it, Bish like to horde some fields, but knights and rooks do the same given half a chance. As long as people enjoy each others company and have FUN that is all that matters.