I don't remember it seeing mentioned anywhere but I would assume that it will be the same in the final game...word gets around and all that stuff so if you do something a companion would really hate they'll probably still hear of it even if you left them back at camp.
I've heard this argument before, and while it makes sense in some cases (it's hard to hide from the rest of the party that you slaughtered a druid sanctuary) it doesn't make sense in others.
It's rather silly to assume that active companions will interpret every sentence you uttered to the rest of the party while they were in camp.
