Repainting..Remove Ground Effects?

Ok, so i'm dropping my GT off to be painted next week. I am in the process of removing all i can before he gets the car. I've got the metal windshield & hatch trim removed, front & rear bumpers, door moldings(one was missing, other was peeling up), all the plastic trim pieces, etc.. I am also taking the quarter windows out since I have a fresh set to go on the car. BUT...those ground effects look like a real pain in the arse. I want to hear from the guys who have done this before. Leave 'em on or take them off for painting??? Any problems down the road? it's a daily driver, not a show car so it doesn't have to be perfect....just nice. Opinions/experiences welcome!