Three bikes, three sets on panniers or saddlebags. Been using a set of these on my Versys for several months now. I must have some carrying capacity for commuting, lite shopping etc. Although speaking only for me (goes with out saying) I found that placed far enough back for rear strap to go under passenger grab rail, they pressed on and deflected the turn indicators. Also the forward strap placed under the seat allow weighted saddlebag strap to ride on and cause bending of the side plastic trim panels. I only use them accross the top of the seat. This way all the the wieght bears on the seat just like a butt. They are semi rigid holding their shape.
"Respect the Ride if you don't you Won't"
"A man's got to know his limitations"