This study didn't come out until after we were past the bottle stage. Thankfully, we didn't use many bottles, as we were strictly breastfeeders. Yet, she did take pumped milk from a bottle at her babysitters house, and I wonder how much of this polycarbonate she got from that. We used drop-ins, but I"m not sure of how much they have in them. I will definitely be looking into this when I have other children. I will just look for the polycarbonate free bottles, which are probably getting easier and easier to find since I think most mothers are probably worried about this.
As for sippys...I wouldn't worry. We use the disposable The First Year cups (great, by the way), and I'm pretty sure they're polycarbonate free already.