I have heard a lot of pilots chatter about things over at Atlantic ASE at a previous job... like "we are part 91 so we don't need all that climb gradient stuff" or "it's VFR, if we lose an engine we should be able to keep it level". I spoke with an ASE controller one day and he said the FAA was sitting in the tower the IFR day before copying down tail numbers as everyone took off. Then they were sending out letters to the listed PIC asking for proof of the modifications made to the airplanes so they were legal to make the LINDZ departure climb gradient. I bet violations followed shortly after. If it's VFR you don't need much but IFR watch out.