I wonder if the game locks out the origin characters, but not the party.
As in, maybe we still have to pick select origin companions and the rest disappear, die, turn against us, whatever.
But the party isn't technically locked because we can still mix in the non-origin companions: Halsin, Minsc, Jaheira, and Minthara.
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I really hope we can still get Minthara if we don't turn against the tieflings.
I doubt it. That wpuld be very misleading and the backlash worsr than the benefit from announcing that there is no lock.
Minthara and Halsin probably excluded each other.
I cant see a viable scenario to have both.