I set off on a 3 day 200km ride the other week, with all my gear - tent, food, clothes etc. in a hiking style back pack. It posed no problems with the motions of cycling, but the main issue were the extra weight it put on my butt onto the saddle, which got quite sore after a while. And also I felt I sweated a lot more on my back as I guess my skin could not breath properly.
Wondering if anyone else has attempted touring using a backpack instead of paniers/trailer, and how you found it - pros/cons etc? I'm keen to do some more touring, and guessing it would be better with paniers/trailer, but can't really affored them at the moment.