Am I the only one who actually uses the upstroke on a climb? I use it to give the other muscles a rest. That is, I'll adjust my pedal stroke to include the upstroke for a period of time until the formerly pained muscles feel freshened. I also stand for the same reason, to give the body a break from the tiredness of sitting, as well as for powering up steep but short inclines. If I want to climb quickly and not lollygag, I concentrate on including the upstroke.