@besalel: sure, however, the point is, the ‘blue tzitzis’ simply go along with a hashkafah that is not ours (ie not that of any chareidi). It goes along with the knitted kippah and the automatic rifle and living in Kiryat Arba.
Fact is none of our gedolim wear it. Name me 1 current chareidi rav who wears it. (And ‘chareidi’ does not include Yaakov Yosef, Dov Lior or Adin Steinsaltz.) I’m talking the likes of serious Chassidishe, Litvishe or Mizrachi leaders.