I kind of enjoyed the demo but it was frustrating at times. The physics and camera angles need improving and having to wind the rope after every climb got boring really fast. In comparison, Tomb Raider or Uncharted have so much more to offer in terms of gameplay, so I'm not sure if I'll enjoy the whole game focused just on climbing.
Jusant's jump is one of the greatest things in games for an absolute age (www.eurogamer.net)