The way I heard the story was that the houses she reportedly was looking at were in the $700k-$800k range on Lake Travis. This is the part that makes the least amount of sense to me. The value of homes they would look at would be much higher IMHO and LT doesn't seem like the right area for a permanent home. One of the counters to the rumor is that she was here looking for a vacation home but that is a little too coincidental for me.
I concur with LVLobo and would add that Nick is too much of a control freak to allow his wife to come in and "shop around". Maybe she is vetting some places out but with what you can do online now I don't see how an in person visit isn't one of the last steps to be taken if serious. Either way, house shopping almost a yea before any kind of a move would happen is a bit of a stretch.
I've been a "I'll believe it when I see it" guy on this Saben thing since the rumors first started floating but this snowball has gotten pretty big and it is now being talked about from too many different and credible sources not to be plausible. I'll eat my crow if need be but this house hunting story doesn't make me think one thing or another about what's going to happen.