While Scripture may not speak to the exact mode of dress, it does address the motivation for dress. "Whatever you do, do all to the glory of God." So the issue is not what is fashionable, or what is traditional, or what is "cool," but a man should consider, "What should I wear as I mount the sacred desk to show God and His people how much I want to honor Him, what I think of my office and my duties as a minister of the gospel, and what will most manifest His glory to this congregation."
For me, and I'm the only person on whose behalf I am fit to speak, I couldn't go into the pulpit without at least a coat and a tie (yes, pants and shoes too, smart alecks). Though in Honolulu once they asked me not to wear a tie since in that culture only lawyers and undertakers wear ties. So they gave me a lei to wear, and I considered that my Hawaiian tie.
Just my two cents worth...