I inquired with Cackle Hatchery. A hatchery with a history of purchasing breeding stock from quality breeders of several different breeds.
I asked about this not a real breed business. Turns out the R.I.W steaight comb stock are culls that hatched with a straight comb. Which if you look at what breeds created the R.I.W rose comb. They purchased them from 3 different breeders that were working on the recovery of the breed. I have 5 hens that are just beginning to lay. I have to say that in my lifetime I have never been happier with the health and virility of a breed of chicken. The SC is imperative to my hybrid project. A rose comb would not work as well.