It would all depend on the manner of travel and the position of the knight in question. short answer no, knights did not travel the roads and valleys for days and weeks wearing their armour. That being said they did wear a varying degree of other items outside of their armour on a day to day basis. Depending on their financial situation and title of Sir, Knight, he would be riding with a few man at arms, a squire and servants or have a company of heavy Calvary, you get the picture.... Typically they would be riding from point A to point B, they would plan accordingly and dress accordingly. A well financed knight would have different outfits to wear depending on the situation. Like modern business men who dont wear a suit and tie every day neither did the knight wear armour everyday. They had dressed down options and would only wear armour for battle or tournaments. usually the armour worn during tournaments were a bit more "dolled" up then his battle armour.