I stay away from "painted" pipes for this exact reason. The painted finish can also scratch and crack (as when being dropped) quite easily. Plus, while others may disagree, the sealed finish causes the pipe to smoke hotter.
As for Petersons, I own 6, but I stay away from the lower end Petes they're making now. Anyone considering buying one should stay away from the ones with painted finishes and, if looking for a lower end Pete, go to a B&M and carefully examine it before pulling the trigger.
All that said, I just got a Peterson Donegal lovat from Marty Pulver. It's a like new estate, with a silver band hallmarked to show it was made in 1979 (the current model has a nickel stem and sells for $80-$90. I paid $45). So the moral is, consider an fine, older estate Pete, from a reliable vendor > a new Pete that retails for less than $200.