I was wondering to all those who have somehow got ahold of this early, if there were any instances where the smart feature didn't work too well. I love the idea of smart, but it almost sounds too good to be true. I hope it works perfectly, but its about the only thing that scares me a little.

The people at Splash Damage say that this is very unlikely.
EDIT: It was in an interview, I don't remember which though.

There was a video on youtube earlier that has since been removed that seemed to show a glitchy looking climb animation. Granted it was only the once and the rest of the time everything looked fine so it might have just been a one off. This is one thing I have concerns about but Im sure itll be fine tbh