My hair is till too short for a denman so when I use it,it fros out my hair (lol). But when my hair was longer I only used wide-tooth combs, never denman. I think maybe I used them in the past but they never worked for my hair. This is what my hair looked like with a wide-tooth.
And I use silicones, etc. I'm not CG and I do not believe that it is always necessary. I don't necessarily follow any type of rules besides the ones that work for me. My hair was perfectly healthy and shiny and I used any cheap thing I found at the store... Which is something that I am doing now.
So, if it works for you then use it o_o