This sounds like a great idea. It would be fairly easy to remove the existing spark plugs, coat the threads, and reinstall them. Can you tell us the retail name of this product. It would be a great weekend preventative maintenance project during these fall and winter weekends.
You can use a small amount of anti seize grease on the threads. You can use any type or brand from the auto parts store.
I just did the plugs on my new Cruze with only 1200 miles on it. The plugs were WAY TOO TIGHT from the factory and if I had waited 100,000 miles, I can be assured that they'd have snapped off.
I strongly suggest everyone do this when the motor is relatively new to prevent costly problems down the road.
While you're at it, make sure they're gapped properly.