If it really does work (sounds like it!), they'll just need to invent something to help aid the transition, before it can be really find mass-adoption.
From the way it sounds now, I'd make the switch only if I could find the time to take a month away from life... Maybe a vacation where all I do is remodel my house and have groceries delivered.
I did this. I just showered more frequently for a month. No one noticed.
After that time, my hair and body odour are permanently better. In fact, I never have BO. (women have confirmed this).
I wash my hair with baking soda apple cider vinegar occasionally. If I eat well and sleep, it never gets greasy. If I eat poorly, it will grease up a bit.
From the way it sounds now, I'd make the switch only if I could find the time to take a month away from life... Maybe a vacation where all I do is remodel my house and have groceries delivered.