Great. Fantastic job everyone /S
At least requiring a suit requires something aesthetically better and more worthy of human dignity. Reverse snobbery demands you dress worse and beneath it.
I interviewed elsewhere and one other time I wore an Oxford. I passed the university interview but the hiring manager told me for the on campus interview to not wear that again, or I'll stick out too much. I wore a plain T-shirt and have been happily employed for 10 years here :)