Debadging with heatgun is usual when your car isnt Brand New. My hyundai Letters were Glued only days before I got my car. On the way home the N (hyu-N-dai) get a bit out of his Position. When your car is new and the Letters fresh, they are easily to remove. Sure, you shouldn't do that when its Winter, so the Glue will be hard. On my last car I used a heatgun to warm it up and make the Glue a bit softer..
Come the day... There will be many on here who will be thinking the same thing... Dosn't apply to me as i own my car... But i suppose it depends on how stroppy your dealer is... And could possibly charge you for replacing it.
I used dental floss and hairdryer, but I think it may have been smarter to not warm the letters up. The glue got sticky and very hard to get off. Especially the "Hyundai" part. But I managed to clean/run it off. Love the look. Car looks much more "mysterious" and potent.