I have bought lots of hair products over the years. I am constantly buying stuff of instagram/amazon/anything that has a half decent review to give it a go. I have thick, poker straight caucasian hair and use good shampoos and conditioners daily. My hair is neither dry nor greasy but prone to getting oily and limp very quickly if using the wrong products. The top of my hair is past my nose and the sides I keep short. With that in mind....
I really dig this product. I work in hospitality, and anybody else that works in the industry knows how frustrating pushing your hair out of your face every thirty seconds can be.
The matt clay is fantastic. I am always super dubious of clays (as i said, if the clay has too much oil in my hair deflates and looks greasy) but this one is different. Its dry in your hair, but smooth coming out of the tin into your hands. It provides a nice degree of separation into your hair to give it texture, but not too much that it looks tacky or shiny.
I probably have slightly too long/thick hair to get the maximum impact out this product, but if i wanted a shorter messier up do then I have no doubt that the product would hold. It does the job brilliant in my hair (I usually half an half this with the shaper product by these guys) to give myself a nice in between of natural look and shine but high hold and scruff-ability. I've let my mates give it a go and it suits them and lasts a whole night out without having to mess with it (but can be restyled if you need).
What I would say is that this stuff is that rugged on it's own, you dont need any volume powders pre/post style, as it will over-dry your hair, make it look too matte and be a nightmare to get out in the shower the next morning. (I have learned the hard way for you.)
I would happily pay double for this product. It's as premium as your Hanz de Fuko's and She Vu's, but at the price of stuff in Boots.