You would probably not be granted a visitor visa, and applying for it could very well muddle things for the processing of your other application. The stated point of a visitor visa is for the person to stay for a fairly brief time in NZ, then to return to the main base of their life in another country, whereas you, with your application in for a partner-sponsored work visa, are obviously intending to make your life in NZ with your wife. The two applications would show up on the INZ computer, and one of them would have to be wrong, and could be interpreted as fraudulent.