Crown Heights, Brooklyn is now home to a controversial new eiruv.* I am aware that the majority of Lubavitchers do not accept it for both Chasidic and Halachic reasons. I am also under the impression that members of most other ultra-Orthodox groups hold that an eiruv cannot be built in Brooklyn and thus will not use this eiruv.
However, where do people in the middle stand? I know labels are variable and somewhat arbitrary, but I'd still like to know whether people who consider themselves, say, left-wing Chareidi, mainstream or modern Yeshivish, Modern Orthodox machmir, heimish, or broadly shomer mitzvos (I'm treating these groups as separate, although they often overlap) accept this eiruv. Also, are there any "ultra-Orthodox" groups who do accept the eiruv, or modern ones who don't? (I am interested in the case of the Crown Heights eiruv, but also Brooklyn eruvim more generally.)
* "The Eruv is under the auspices of Congregation Kol Israel of Prospect Heights and their Rav, Rabbi Elkanah Schwartz,who has established the nearby eiruvim of Prospect Heights and Brower Park [sic]." --here