I'm interested in this. I have a splash Ameraucana male I'm putting over barred Holland hens in the spring, for blue egg laying blue sex links. I've hatched out some chicks from that male over barred Rock hens and was able to sex them fairly well...Agreed, but there was a reference in one of the responses to "black sex links" (that does need EB), and generally when people are looking to make sex links with barred hens, they are expecting EB chicks with male head spots. Wild-type can work, in fact that is the basis for the CCL's (and other *bars) auto-sexing, but I would not count on a non-EB male creating sex-linked chicks from a CCL hen. It might work, but I got the impression they were looking for a "sure bet", in which case EB is highly recommended, and BCM's provide that.
I had some "blue sex links" last spring (splash roo over BR hens) and I was fairly sure I knew the sex, but the lighter down made it harder to be sure, and we all want to be sure, that's sort of the whole point. I want my color-based sexing to be 100% and very obvious.
I also have a single CCL pullet and two Rhodebar pullets I'm thinking of leaving in the same pen with the splash. Do you think either of their chicks will be sexable at hatch, or is the down color going to muddy the waters? I'm not as happy with the CCL as I'd thought I'd be, but could really see myself coming to like these Rhodebars and could handle having a pen of them