If you are seriously conditioning Silkies for showing, you will do better keeping them in show coops on kitty litter, and feeding them some freshly clipped grass, and alfalfa leaves for goodies.When they are digging in that fermented feed in the bottom of their cups, what is happening to their crests and beards ?Well I thought I would give it a try. It makes sense to me in that the food is more bioavailable to the birds so you feed less and they produce less mess. It increases vitamin content too. I have found that by keeping it thick I don't have much problem. What I do is fill the bowl about three quarters and then top it off with crumbles/pellets. They start in on the dry and end up packing it down into the bowl and it ends up very compact, like a ferment cake. As long as I do this there is no beard mess. I also let my birds free-range on NICE days in an large xpen (actually several combined) that I move around like a tractor. I have an LGD that is wonderful at his job so I don't have to worry about anything preying on them. He goes after hawks too. Love that dog.
I have not seen a difference in feeding fermented feed. All you are doing is adding more moisture, and cutting down on feed consumption. I have tried it, and was not pleased. I also worry about pathogens growing during the summer months.