Anyone who sneers at building a new frame up for you isn't worth the time. The guy down the street from me did my build for the Hyak - no sneering involved. I'm sure he'd love a nice Italian steel frame to work on. Buliding up a bike isn't too terribly cheap though..... I put mostly Shimano 105 stuff on my Hyak and I already had the wheels and the brifters and it still cost about $900. To go Campy would be more than that.

A couple places I think would probably be sneer free
20/20 Cyles on Union Street (the one I had my bike built at)
Recycled Cycles - in the U District
Montlake Bicycle Shop - Montlake Blvd
Second Ascent - Ballard