Hello99,
It is not unheard of to have Tefillin worn in shul on Chol HaMoed. There are already three complete Kehillos that do so. One in Bnei Brak, Beitar and Jerusalem. And there is an additional Kehilla that has two minyonim, one with and one without, and the Rav davens with the one that does put on Tefillin. That Kehilla is the Erlauer Kehilla. The Erlauer Rav is a recognized Talmid Chacham and is a member of the Moetzes Gedolai HaTorah. He is a direct descendant of the Chasam Sofer and follows all of his minhagim.