Ah, note that I said "good bowl coating" and a "proper coating". Like Rick Newcombe, I discovered a good coating is not noticable and makes break-in a snap. Most artisan makers now use an activated charcoal & gelatin based coating (Kyriazanos, Asteriou, etc.) Both ingredients defiitely FDA approved. I had two uncoated Rad Davis pipes which were awful to break in. I vowed never to buy a new uncoated pipe again. I don't think anyone is using the old water-glass coatings that were favored 20 years ago.
Al, just what I want to smoke, some black goo concocted by a pipe maker, not FDA approved, made from who knows what and how it reacts to fire. Could it be toxic, you don't know, I don't know, know one knows. I have tasted a couple that were disgusting and have tasted the ass of a dead rhino that was more appealing. lol