This was taken from the Feb 10th issue of the Yated Ne’eman which in turn took it from Bakehilla (Feb 2, 2012). Rav Elyashiv was asked what kind of mezuzos should be used in the public areas of a building where both Ashkenazim and Sephardim live? Should the mezuzos be Ashkenazic ones, which are mostly written in ksav Beis Yosef, or Sephardic ones, which are written in ksav Ha’ari? His reply was that the mezuzos should go after who is the majority in the building. As for public buildings, such as hospitals, where the population is always in flux, it is best to use mezuzos written in ksav Beis Yosef, since it is more mehudar.
My comments: Separadic mezuzos are not written in ksav Ha’ari, they are written in a form of writing called ‘velish’. I really doubt that Rav Elyashiv said that Sephardi ksav is the same as Ari. So my conclusion is we can’t learn anything from this article because there are clearly mistakes. My guess, something got lost in the translation.