If he has already locked with the pied, I would be hesitant about throwing a recessive male to her, period. The others, what the heck. Still, mixing co-dominant snakes with a recessive alternate equals question-mark babies, and some locks go unobserved. With the female pied, you would at least know that they're het pieds, but the clown gene would be iffy until proven, making them only possible double hets.
But ya gotta go with your gut.