Unless you're going to actually be carrying your luggage on your bike, my guess is that your Trek will do just fine. Remember when most road bikes were called "10-speed racers" even though most people just used them to ride around on? Well, the same still seems to hold as most bikes above entry level are still often written up in the brochures as being great for "competition", etc.

I use my Specialized Sequoia about the same way as everyone else that I see out there, but it is sometimes called a "light touring" bike mainly because it does have fittings for racks & fenders. I think your Pilot is in about the same class and will do fine for the type of touring where your gear is carried for you in a sag wagon.