Undercoating Remove or Not??

[JustOneTruck]

Hi all I`m asking about this lovely black crap that is sprayed all over the underside of the engine compartment so it wont rust .Now I know its their to protect the metal and all .But I have this question stuck in my head Do I want it to look really nice and shiney or dull and sticky all over. Ive worked on it a few times and I spend more time cleaning my tools. If you want pictures let me know I only cleaned the radiator support top with with my bellie and shirt It sure looks nice . Do I go clean or do I take the black crap off ??