The Charname Who Saw Everything Twice

hi,

Serious question:

over here: https://forums.beamdog.com/discussion/62903/cleric-thief-appreciation-thread#latest , I've suggested that one might run a party with two Tiaxes - or indeed, two of any one NPC. Will consoling in a clone of a party NPC break the game? Will I get two identical quests, or one quest and one guy leaving at the end of his unfulfilled quest timer? Will I get twice the amount of dialogue, or will I get the same dialogue twice? What happens if this is a NPC with unavoidable & lethal conflict with another NPC - say (for the sake of argument), two Kagains and one Yeslick?

Is this even advisable?

I really only want to do this with Tiax, but still.

(This topic named after a great chapter of a great book: Joseph Heller, Catch-22 , http://www.mit.edu/afs.new/sipb/user/yoav/athena/text/text/The_Soldier_Who_Saw_Everything_Twice)