I got them Line-X'ed at a Installer shop. Didn't want the hassle of the prep, and have had no problems with anything. Easy to clean too, compared to the OE material. If you do it yourself with a kit, take the time to prep the surface, because that is where the finished product will shine and give no problems. Any dust or moisture, and it will come back to haunt you.....I've Raptor-lined an old TJ some years ago, and was able to achieve the more granular texture you've got on your grille there by spraying instead of rolling. It looks really great on yours and I've been debating doing something similar with mine.
Would you mind sharing what you used for spraying, and at what values? I used my air compressor at around 55psi I want to say? It's been too long.
Good luck, and thanks for the compliment.