Felting soap

I just received two packages of roving that I purchased from Maine Woods Yarn & Fiber on etsy. They are absolutely beautiful. I can't wait to see how they look on soap. I am going to try out felting some of my soap tomorrow. I will let you know how it turns out. I will be following the instruction that are posted at Mielke's Fiber Arts they have a great tutorial with lots of photos. have any of you tried out felting soap? If so how do you like it?