yes, the feature has been added, so now you can assign AI-Personalities to one or both your characters if you want.
the beta took me around 30 hours to complete, but i am a completitionist and i may reload after a fight where one of my characters died, even if i could revive him, just because i want to do this as good as possible. This takes some time. Also i reloaded sometimes just to try a different solution to a quest. So others had around 10-15 hours, it can be done faster (many people are now doing ther xxth playtrough).
sad thing, every update destroys the old savegames, so i would wait until release, because probably there will be even more updates in the next days or weeks because we are near the final version now.
