Me and Mark (722ish) did his. Well, I did his. It's so easy. Just do each letter individually. Hold a hair dryer over it for a few seconds and the letter will peel off leaving the adhesive. Then hold the dryer on it for a little longer till the adhesive gets hot and just peel it off. The paint's not any darker under there and all you have to do when you get it all off is put a good coat of (I recommend) Meguiar's Cleaner Wax over it and scrub it off. Put some force into it but not so you scratch it. When you're done you won't even be able to tell there was ever a S U B A R U there and it looks slick as shit. Oh yeah, we were going to take off IMPREZA under WRX but I don't recall if we ever did or not....

I'd say do it. It's easy and it looks good!