"not familiar with either" is grammatically correct and can be used in written English.
It is typically used to express a lack of knowledge or familiarity with two options or choices. For example: - "I'm sorry, I'm not familiar with either of those restaurants. Can you recommend one?" - "I haven't read either of those books, so I'm not familiar with either author's writing style." - "As an international student, I'm not familiar with either American or British slang." - "I'm not familiar with either option, so I'll have to do some research before making a decision."
Some say the best he can do is fool hitters who are not familiar with either his pitches or the odd hesitation in his windup.
I am not familiar with either of these people but Democratic strategists say that millions of white working class men will now vote for Barack Obama because of this.
If you're not familiar with either' work, here's a comparison.
By performing due diligence on the language and culture if you're not familiar with either, you can avoid choosing names that might offend possible Indian clients or be rejected by Indian authorities.[6][7].
Measures were translated into Spanish using a translation-back translation method: 1) translating original English into Spanish, ensuring the English meaning was maintained; 2) back-translating into English by an independent translator who was blinded and not familiar with either the Spanish or English version; 3) comparing the two English versions; and 4) resolving all discrepancies.
If you aren't familiar with either garnish, start with small amounts.
A Congressional Spokesperson noted that while Mr. Singh may not be fully aware of all the issues involved in the office of President, this should not be a problem because Bush is not familiar with the issues either.
To assign it this function is neither to say nor to imply that spirit cannot, in the case of a corrupt and de-natured soul, turn against reason, even if well brought-up individuals like Glaucon are not familiar with such corruption either in their own case or in the case of others (440b).
"Many women are either not familiar with the precautions they should use with Accutane or are not using those precautions,"she said.
One that jumped out at me when I first saw the poll was the large majority of Americans who are either not familiar with (28 percent) or have never heard (35 percent) the terms hydraulic fracturing or fracking.
Most were either not familiar with the indices developed for ISD or thought them too complicated.
