Quick update:
Wore the tie, no suit (jacket/slacks/nice shirt/shoes), and it was probably overkill, as the GM was wearing a pair of faded jeans and a polo shirt.
No matter. I had an offer within 20 minutes. Seems like a cool company and I'd get to play with toys I've never played with before (and I get to play with some pretty cool toys at my current job), the money is good, and there seems to be a lot of room to grow.
I'll get a formal offer on Monday, I'm told.
Jim
(tie wearer)