I've been using my kamisori razors with increasing degrees of success. I use the ura against my face, which seems to work best for me. Using one hand and one side of the razor has been a bit of an adjustment for me but it has been a lot of fun to learn.
I really like these razors, although I don't think they will become an exclusive thing for me. For sure they have a regular spot in the rotation, just not every day.