never had an issue, when traveling with my wife or son and they also get priority boarding when with me. Just went to HNL and we had three bags and decided to put all three under my name just to make it easy, but we never had a problem.
As a matter of fact earlier this month, I left YXE for YYC and my son checked into YYC and had his bag tagged priority without me, but he was on my PNR. I have to say that AC has been great withg us on this issue.^