So I've been doing this for just over 3 weeks now.
During the first week, I actually didn't notice anything at all. My face felt slightly more greasy than what is usually is, but my hair and skin was the same. No smell.
At around the 2nd week, I could smell myself a little. By now, all of my friends that I regularly see were told that I haven't washed with soap (apart from my hand and balls) and after being quite shocked, they haven't noticed anything. The smell was just a little musky. The wife can't smell anything on me.
But now, I'm definitely feeling some differences. My skin does feel softer, like I've been using moisturiser. My face isn't so greasy, but it still does feel like it is and where my hair line is, it definitely feels greasy. I hope this gets better.
I feel the need to wash my hands all the time though and if I scrape my fingernail across my scalp, I'm getting what must be skin or something under the nail, but it doesn't look like I have dandruff.
I'm gonna keep at it and if the hair gets better, then fuck it. No soap it is.