I personally would not sweat the coating. Coatings on pans like that (as Lee suggests) will routinely get burned up and/or scraped off in normal use. That's what eventually happens to all of my roaster pans that came with a coating.
Seems like a nice option, especially with the perforations. Bonus points if you could clean it in the dishwasher -- does it fit?
But for $30, I went with the FireDial. Fits perfectly, perforated, completely flat. So you can easily clean it with a paint scraper if you leave the metal exposed (like a flavorizer bar). You can also foil it or put a disposable drip tray on it.