Any Experiences with Beard Transplants?

I have a few large spots of alopecia on my face, might of been due to various issues with my skin as a teenager. Most of my facial hair is pretty thin anyway so I'm considering a transplant to even it out.

Seems like an uncommon procedure but does anyone have experience with this, either on the face or head? Research says that it's a pretty fast procedure with minimal recovery. Aside from the cost it seems very feasible