You can tell when somebody doesn't have much experience with a click by how much they "correct" themselves when they stray from the click. They're like a person first learning to drive. It takes concentration and bigger, jerkier movements to keep between the lines on the road. In time, however, the corrections occur much more rapidly and are much more subtle, and the driver starts to do them without thinking about them. The result is a smoother feeling ride. It takes a lot of practice to get to this point, just like it takes a lot of time playing with a click to make it sound natural and not "forced".Very true. Pushing and pulling is more evident against a click, where it would probably be imperceptable without a click.
Also, some people tend to hug the driver-side line, others hug the passenger-side line, and some others are able to drive perfectly between the lines (...does anyone catch this metaphor?).