I would say that the answer is relative to how you plan on touring. Some people ride hard, even touring. Some people ride very slow, for just a few hours a day while touring. Most are somewhere in between.

If you plan on touring for an extended time ( a week or more), and sight-seeing, you'll probably want to be more upright. It takes a lot of weight off your arms and shoulders, flattens out your back, and puts your body in a more relaxed position to more easily observe what's around you. Your knees are likely to be behind the spindle. Most people want a more comfortable saddle, since you won't be pedaling hard enough to lift the weight off your butt. You'll be on and off the bike more often, so your butt will get frequent breaks to recover.

That said, I've seen folks touring around with bikes set up in full racing positions. Depends on how you want to travel.

Lots of people use aero bars while touring. Most don't have them set up very aero though...