Breeding sex links will produce a mottled affair. Since they have two distinctively different parents mated to "nick" a great laying hybrid, they will produce good, solid layers, but the coloring will forever be rather blotching and inconsistent, shall we say.
90% of the hatchery chicks are "mutts". Let's fact it. They are no longer true to standards or type. Many have polluted gene pools. They are called RIR, but they are far from the heritage bird. But, they will breed true, that is, they will make more of themselves. This might be the way you wish to go if breeding for consistent look is something you want. Production Reds would likely come the closet to the Sex-Link hybrids in production while maintaining a consistent breed look.
