Should Ex Ante Be Italicized?

I believe they are both ("ex post" and "ex ante") considered integrated into standard English and italicizing them is unnecessary.

Should ex post be italicized?

Italics are inappropriate for: ... Words, phrases, or letters presented as linguistic examples (this is a change from APA 6 guidelines, which recommended using italics for linguistic examples) Foreign phrases common in English (et al., a posteriori, ex post facto)

Should ex post be hyphenated?

Ex-post is common in statistics, particularly due to the frequent use of ex-ante and ex-post analysis in business and ex-post analysis in the social sciences. It is commonly not italicized, and I would keep the hyphen, though many do not.