i have one of those pots that i use for a HLT. i have a thermometer and sight gauge drilled into it, and after multiple boils havent had any off flavors or any part of that coating come off.
i was a little worried at the beginning as well, but haven't had any issues yet.
Too often, we lose sight of life's simple pleasures. Remember, when someone annoys you it takes 42 muscles in your face to frown, but it only takes 4 muscles to extend your arm and bitch-slap that mother F@&!*! upside the head