In 1998, a friend & I modified Rick Steve's 21-day best of Europe tour to travel from Frankfurt to Nice, swinging through Freiburg-Stuttgart-Colmar, the Cinque Terre and Sienna, in addition to all the major stops on the Rick Steves tour. We spent 28 days, travelling by train & a few bus trips in Europe.
I brought a Tom Bihn brain bag & Rick Steves' civita backpack as a day bag/purse - both were 3/4 full at most. My friend had a 22-inch rollerboard that was bulging & weighed a ton & her huge messenger bag. We both carried our bags on board the plane.
The immigration officer in Rikjavik held me a long time and their custom officials literally went through every item in my bags. It was difficult for them to believe that I was touristing through Europe for almost a month with my less-than-full brain bag and civita backpack.
I had same experience going through Canada's immigration/customs 2x with just my backpack (not TB) a purse. Both times to visit family over the christmas holidays for a week or so.
Opps! Posted more than the topic.