On one trip to my home state for the weekend, we had planned on one of my 'friends' bringing some mattresses and sleeping bags in his car so we could camp out. Well, in his normal fassion, he pulled a no-show... so we raided his house, took all of his pillows and blankets, and headed to the camp site about 10 min up the road. I had a blanket stuffed down in my wind-screen, another wrapped around me, and tucked into my pants. I was sitting on two pillows, and had my backpack full of drinks and stuff that should have been in the car. I was carrying the least amount, of the three bikes that were on that trip. Although it felt very odd, I saw no problems with weight or anything like that.
Anyone who rides in my area can pick me out my my blue and red backpack. I never ride anywhere without it... anything from my daily commute to overnight trips, you can always pick out the blue and red backpack.