The main reason I got the ceramic coating on the headers for my last two cars was to reduce under hood temps. Not only better for performance but also protects other components from an early heat related death. It is amazing how fast you can put your hands on coated headers versus uncoated once a hot engine is turned off. So I'd say on a daily driver coating is important. My car is a daily driver and is driven sometimes as 100's of miles as time during all seasons.
I know of some people that have gone uncoated and later either wished or went ahead an had them coated. I know of no one that went with coated and later had them stripped. j/k
fwiw I talked to the same companies.