My hair doesn't like things that lather, so I don't use shampoos at all. Even the sulfate free ones are too stripping for my hair and I get crazy tangles. So because I only use cleansing conditioners to clean my hair I don't use non water soluble cones. I think it all just comes down to personal preference.
I love my Paul Mitchell the conditioner and it has cones, but I know that they will rinse out with just water so I don't worry about it.
My hair is happy and soft which makes me happy.
Cowash: DevaCurl No Poo or As I Am Coconut Wash
Conditioner: Giovanni Tea Tree Tingle
Leave-in: Paul Mitchell the Conditioner
Styling Products: EcoStyler Olive Oil Gel
Oils: Coconut oil. Carol's Daughter Hair Balm.
Deep Conditioner: Shea Moisture African Black Soap Purification Masque (also a great detangler and cleanser)