This is such a kick. I avoided the Urge to Disco but my brother was so into it he took dance lessons and wore white suits and was pretty much the Vecchio you describe, except for the crucifix. You've totally captured the look and the hair and the attitude.
And the Vecchio/Kowalski tangle? Icing on the cake.

(And though I mocked him mercilessly, at 50 my bro is still the best dance partner I know. He understands how to lead.)