ditto on this one.
as far as racking, i use a sling. that way i can have "easy" access to my gear no matter what hand is where, etc. if you and your partner do it differently and don't want to compromise, then just take the time to do it differently. i think whoever is leading might as well rack the gear the way they want it racked. when i'm leading i don't want to put gear where i'm not used to it being, especially if i'm pushing my limit!