I found the demo to be pretty good. I don't see combat being a huge part of the game, as it was said in the demo that it's kind of a last resort (you'd want to probably avoid combat if you can). It's not bad combat, but it's not the best; it's pretty mediocre. However, despite what some people said, I found the controls to be very well done. After my first time through, I was adapting to the controls quite well.
P.S. You can skip the training portion of the demo if you wanted.