Hi, I use a coat king on Murphy. I show him and some people (even some of the showing ones) have said how long it must take to hand strip him... Admittedly though the hand stripping look does give a better all around polished look.
His Coat King has never cut his hair, I can imagine it might cut or, rather break fine, floaty hair but the hair on his back can be quite coarse and it just pulls it out. If you press hard then I could imagine it might cut the hair but you have to do it really gently, if the hair wants to come out it will! Murphy is 14months and he HATES being stripped and gets really distressed but really enjoys his coat king. His breeder recommended it to me and she has shown at Crufts and won at Champ shows etc. I can never remember which tooth size we have, which I would think would be a critical factor in cutting or pulling out the hair. But they're not as bad as some make out.