I have seen someone who has had their beard transplanted with body hair, and I have seen hair transplanted onto someones chest before. It was done by Dr. Epstein and he posted photos of it. It looked good and extremely natural, at least in photos.
There are plenty of people who have had beard hair used on strip scars, and some on their scalps. I had about 400 beard put in mine. Some are growing, and its hard to say there is a huge difference, but it seems to me that my hair is thicker with the roughly 800 (chest and beard together) I had put into the scars
If you are talking about "scars", anything on my face is invisible. Nothing at all noticable. I can see some white "dotting" on my chest, however. But for me to actually see it, I kind of have to pull back on the skin, and then know what I'm trying to find. Others cannot notice a thing