I have a mixed laying flock that was overseen by two Barred Rock roosters, so I did have purebred Barred Plymouth Rocks. My main rooster died in a fluke drug reaction and his son was injured right afterward, so I at the moment, only have the Blue Orps. I'm finishing my list this month and wont be mailing hatching eggs during the summer, probably not till late September. At that point, I wont make any waiting list, but will gather eggs and offer sets of them on BST.
I hope to have a BR rooster with the flock again by then as well as possibly, this fall, adding a second Orp rooster with his own ladies.