Has anyone tried lightpainting for portraits/faces?

I am wondering if anyone tried this and has any pictures to show? My guess is that the actual geometry and edges of the face would be blurred because of all the slight motion going on at long exposures.

Here are three pictures by Alex DeForest that I absolutely would love some insight on.

http://petapixel.com …ads/2013/09/def​orest3.jpg
http://petapixel.com …ads/2013/09/def​orest4.jpg
http://petapixel.com …ads/2013/09/def​orest5.jpg
http://petapixel.com …ads/2013/09/def​orest6.jpg

This article says he uses fibert optics lights (http://petapixel.com …-portraits-alex-deforest/) but I'm wondering how he got his eyes to be so sharp?

Hm. With a tripod and a good model, a relatively long exposure is not impossible. As with any sort of experimental shoot, it might have taken several (dozens? hundreds) of shots to come out with a handful that are sharp and acceptable. With as much clipped-black area as you see in these shots, it's also possible that the model was leaning on something, resting the chin on something, or even lying down - this would enable a perfectly still pose for any needed shutter duration.

The first shot is pretty soft, so maybe the model was just standing.
The second and third shots, you can't see the chin at all, so maybe the model was resting his chin on a stool or something.
The fourth shot, the model could have very well been lying on his back.

I can just imagine the conversation for the shot setup:
"OK, I need you to be perfectly still why I slap you about the head and face with these fiber optics"