I've been using the Butter Bar Conditioner shampoo bar about a week. I started after my commercial shampoo (Suave conditioning shampoo) ran out. Since I had switched to shampooing only every other day with the Suave, it seems to have taken less time for my hair to acclimate to the change. Today I conditioned for the first time with apple cider vinegar and water mixture as well. I'm actually pretty happy with the results thus far. I may alternate using a non-conditioning shampoo soap bar as my hair seems to be getting oily. On the other hand, my hair/scalp may still be trying to regulate the oil production so I may give it another week with this bar before switching to a non-conditioning version.
I've been keeping in touch with a friend who is now using dreamwidth and she recently made the switch from commercial shampoos with variations of the chemical, Sodium Lauryl Sulfate, to shampoo bars from Chagrin Valley Soap. Based on her advice and the advice of one other person who is using the same product, I ordered a few sample size bars of the soap. They arrived today (Squee!) and I'm going to try them out once my bottled commercial soap is gone (very nearly done now). I'm going to try to post the results here in case others are interested. Stay tuned!