The team has decided to make that off by default.
Some concessions have to be made. Not everyone uses TTW for the same reasons, some people want to just use it to play Fallout 3, and we want to accommodate that too.
The goal is to integrate the games, things mostly get changed on the Fallout 3 side of things to compensate for the mechanics. However in order for a lot of Fallout 3 stuff to even work properly things have to be changed in Vegas sometimes, the Companions are a prime example of that.
This has been said before, TTW is now being treated like it's own game. In order for the project to move forward and raise it's overall quality and polish we've been spending countless hours working on it. It's really hard to make things which were designed by different people to work well together, so some middle ground has to be found. We try very hard to remain conservative about it too. So all we can ask is you suspend judgement until it's released and you've had a chance to play it.
We already know some people are not going to be happy with some things and gracious for others, you can't please all the people all the time. When it comes down to it, the motivation for such a project is based on the desires of the people who put the work into it. Without that motivation it will die and fade away.
That all being said, everything is being made as optional as possible, so *you* can choose how you want to play TTW.