Having rebuilt too many engines, I'd wager they just popped them in and let you run them. I've seen a lot of really stupid stuff, I'd check if you can. The rotators mainly came on trucks and vans, did your other heads have rotators also?
I don't remember. But it's a pretty reputable home town shop. I don't THINK they would do that. But I will be pulling a valve cover to verify! Doveryai, no proveryai.