Yes, he is a buff orp. I already know if he is the dad, they will be non typical sex links. Buff orp over slw are not the typical breeds used to create sexlinks, but do. I hatched out chicks from a buff orp roo over a light brahma. As long as the hen is silver gened, like my slw hen, will produce sexlinks.
It was moreso the interest in the ee cross. Im wondering if being mixed will still be considered ee chicks.
Well, yes, any red cock X silver hen cross will be sex linked, but not all Sex Links are created equal. Some will be much harder to sex at hatch than others - the only visible clue might be a few patches of color with only a shade of difference.
There's a lot of different argument as to what qualifies as an Easter Egger. My personal opinion is that any mixed breed who lays green or blue eggs is an EE. The exception would be brown egg laying hatchery stock EEs - a bird who has Ameraucana or Araucana heritage, shows a typical mixed color with stippling in the feathers, has slate or willow legs, and shows a beard and muffs, but is one of the 20% of hatchery Easter Eggers who lays a pink or brown egg.
So, for example, if you went to a feed store and bought a bird labeled Easter Egger (or falsely labeled "Americana"), that would of course be an Easter Egger, even if it was one of the few who didn't lay a green or blue egg. If you bred it to another bird - say, a Barred Rock, and the offspring laid green eggs - those would be Easter Eggers. Or, if you bred a Pure Ameraucana, Pure Araucana, or Cream Legbar to a Barred Rock or Orpington, and the offspring laid green eggs, they would be Easter Eggers. However, I think that if you bred a brown-laying hatchery Easter Egger to a brown egg laying breed like an Orpington, that would class as simply a mutt, as it neither produces a colored egg or is likely to show a classical Easter Egger appearance. Same goes for a basic crossbreed of brown egg laying breeds, say Orpington and Barred Rock - neither lays a colored egg or has Ameraucana/Araucana heritage, and so the offspring are simply mutts, not EEs.