On or off road?
I don't think this has been done thus far. I haven't looked back to see if anyone has ever had people 'fess up' so I'll give it a shot.
With all the recent discussion abut gear, UL or not UL and some of the other topics that have come up as well I think we need to come to realize who we are. In some case certain situations are required. If you are going to be riding down tight enclosed trail you can't really use panniers very easily. While when on road riding you really don't have any reason not to use panniers, quote unquote. Due to a persons preference as to which method of riding they are doing most of the time can determine what kind of setup you are using. It can also go to determine which kind of setup you will HAVE to use. If you are going to have to carry 3-4 days worth of food or water on you because of limited resupply you have to set up your system much differently than someone who is going to be riding through a town every 10-15 miles.
Let's have a roll call of the people on the message board. What is your preferred type of touring, on road, off road or are you a mixed tourist(both on and off). This can help separate out the crowd and help it make more sense why some people prefer one method over another as to how you pack.
I'm 100% on road. I try my darnedest to avoid gravel roads or any bike trails whatsoever. I do occasionally get on a bike trail, paved trail, but I try my darnedest to avoid them. Who's next to fess up?