Sell them the embryos as long you tell them they are from a carrier, make sure they understand what that means, and then it's their problem. I certainly wouldn't offer them any kind of guarantees for carrier-free status of calves. That's not in your control.
We run primarily a commercial herd. We do have a few carrier cows running around. This year we've lost around 15 calves this month during calving - all from starving coyotes, heat, premature birth, or various combinations thereof. I have yet to ever lose a calf or a cow to a known genetic defect - thanks in large part to the information that DL and others helped get out. But that's the point - the information is out and managable. Having carrier females in a herd is way down on the totem pole of potential problems for commercial cattleman.