You're so lucky to have the gene. Does your roo seem to have less feathering? afaik the only outward appearence of carriers was a row of missing scales on the legs so if it also reduces the feathering, that would be interesting info. I'm not sure if you knew this already- believe your birds came from stock where naked neck and scaleless were deliberately mixed in together. afaik, scaleless carriers without naked neck look like normal chickens(except for the row of missing leg scales)
I recall reading of scaleless birds popping out of a New Hampshire stock.. no mention of naked necks... just normals and completely nakeds.
added: just remembered there was a scaleless that popped out of oriental type breed in Vietnam.. Thailand or..?? saw pictures it looked like t rex.