While Louise likes her walks, she's not one hundred percent on board with the wearing of the harness. On the one hand, I think she likes the fact that she can tug at the leash without choking to death anymore, like she did with a collar. But on the other hand, I'm not sure she is completely comfortable, as she will often pause to shake herself off, almost like she was wet.
Of course, since the net result is that the walks proceed just a little slower, and Louise is alive at the end (from not hitting cars along the way), we stick with the leash/harness setup. I think it is going to be a long, long time before we attempt to let Louise go off-leash. She's just too car crazy.