Thanks for the input everyone!
robow, that's a great idea! I hadn't thought of using standard mtb issue shifters.
In addition to the occasional tour, this bike will be my workhorse. I'll be using it for shopping and for carrying the kids around. With a piccolo on the back and possibly a trailer too, I think that keeping my hands on the bars as much as possible is a good idea. It sounds like if I'm planning on using brifters, then Campy is the way to go.
I guess I need to decide on a bar first. Does anyone NOT like their trekking bar?