Pakistanis routinely add their religion to their CVs when applying for
a job. Private schools ask parents for the religion of the students. The form I saw recently for applying for a teacher's position in govt schools in Punjab asked the religion of the applicant. The final paperwork for submitting a PhD thesis at Punjab University asks for religion.
Pakistani Muslims have been happy enough to ask for or provide religious affiliation when it benefited Muslims and gave them preference and advantage over Christians or other communities.
Then they are shocked, just shocked, when someone asks about sect."