Depending in your donor, it can be difficult. But most people have some lower caliber hair. For instance, when my transplant was done, they were broken into 3s, 2s, 1s, and F1s. F1s are fine ones. They are used in the front to soften the hairline.
This is an attention to detail that top docs use. So, if you have multi follicular units in your hairline, I'm pretty certain they didn't go to the trouble soften it.