Does Zmod support this shader yet? Last I checked, it produced issues with components using the shader, much like the ped_wrinkle shader. To clarify, it seems to apply a dirt overlay when the ped is in the desert.
This is a completely vanilla, unedited ped. s_m_m_ciasec_01. I posted 2 screenshots just to highlight how the shader affects the appearance when the ped is in the city versus in the desert.
I believe it had the same issue as the ped_wrinkle shader. With that shader, if you export from zmod, it disables blood mapping on the component, and the shader itself doesn't work. The only way around it is to change back to the normal shader in zmod, export, then use openformats to change the shader back. I recall also encountering issues with openformats failing to reimport if a ped is exported using the ped_enveff shader from zmod.