Though when I think about it, I don't know how the rule of dressing a step or two above the usual workplace apparel works when the usual workplace apparel IS a suit. I think wearing a tux to a job interview would just look silly.
You have to think outside the box, and demonstrate synergy.
By dressing as a patriarch of the Byzantine Church circa 1200 AD. Bejewelled cloth-of-gold robes, silk sashes, tall hat encrusted with gems, big stick to smack people with. Hire a couple of altar boys to swing incense censers before you and bless the cubicles as you walk in, and you are guaranteed to be remembered. They won't need to make notes on your resume to remember who you are when it comes time to decide on hiring. There's making an impression, and then there's making an impact.
"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question." ~ Charles Babbage (1791-1871)