The question is not about your affiliation, but what you do with it.
During the lunch break at a state PHCC convention, I sat with five contractors. Only three of them knew me, but the other two had been reading my articles. Of the five, two of them were signatory union contractors, one was double-breasted and the other two were open shop. They were discussing my philosophies and me before I joined them at their table.
"We need you to settle our argument," was the first comment I heard as I approached. "Are you pro union or pro shop? You seem to be straddling the fence. One statement will be very positive and your next will be totally negative, regardless of which one you are writing about. Whose side are you on?"