I know this is an old thread but Chris you are so true. I am so tired of Hatcheries selling RIW's and they are single comb. They really are White Plymonth Rocks that they call RIW's. I have just made my own RIW's and they are 100 % better than any hatchery bird.Rhode Island Whites are a Rose Comb Breed there are no Single Comb Rhode Island Whites.
Chris
This years pullet
Momma
Way way better than any hatchery bird...and these girls lay very well.