Don't worry too much, the 'uphill' results in that link are a bit extreme since the example has them going 17mph up hill. I doubt you're going that fast on the mountain climbs you do (in fact, not even the pros go nearly that fast up GMR in a peloton). The gap between weight and aero closes down pretty nicely at 8-10mph on those multiple hour long mountain climbs we have available to us.