As a character he has often been regarded as antithetical to the more Confucian Lu Zhi, but in reality they seemed to agree on a number of points and Lu didn't have any problem recommending Du for his abilities.
As a character, he has frequently been seen as contrasting with the more Confucian Lu Zhi, but in reality, they seemed to have similar views on several matters and Lu was not opposed to suggesting Du for his talents.