I would say that I'm a feminist theorist before I'm a queer theorist or a gay and lesbian theorist.
Man, I'm a conspiracy theorist by nature. You can't experience the federal penal system and not be somewhat skeptical.
I'm not a conspiracy theorist - I'm a conspiracy analyst.
Much theoretical work, of course, focuses on existing economic institutions. The theorist wants to explain or forecast the economic or social outcomes that these institutions generate.
The modern physicist is a quantum theorist on Monday, Wednesday, and Friday and a student of gravitational relativity theory on Tuesday, Thursday, and Saturday. On Sunday he is praying. . . that someone will find the reconciliation between the two views.