Earlier quoted context omitted.
It's actually quite ergonomic if you have the laptop in your lap. Using the touchpad is more awkward. This is basically what I use the touchscreen on my Thinkpad for.
But working with a laptop in your lap is just about the opposite of ergonomic.
It's really something that is useful in a small percentage of cases but really helpful in those. I wouldn't want to miss it. Lenovo even does matte touchscreens so there is no disadvantage (I hate glossy screens so Apple isn't an option for me either way). Usually glossy is the tradeoff you make for a touchscreen, but not in this case.