Hello,
Yes we have seen another company that offers strokes instead of dots.
We are looking into a similar technique that can be used in combination with a hair transplant or in certain circumstances to give an appearance of thicker, it would only apply when a client has diffuse thinning and still has a reasonable hairline.
We would not recommend having strokes to give the appearance of a shaved head, as when a hair is shaved short, all you see is a dot and not a longer stroke.
Regards
Skalp