Unlikely that those would fit. Flat bars have a narrower diameter than most drops in the gripping area, and the grips you linked are for flat bars.

THere are rubber grips designed to by slipped over the flat of drop bars for use primarily on track bikes, but these are generally not the 'ergo' style with a flat portion that spreads the weight out on your hands.

HOWEVER!!!! excess pressure on your hands is often caused by a problem with the setup of some other part of the bike - most of the time the postion or angle of the seat is at fault. In my experience, if the nose on your saddle is pointed down, even a little bit, than your weight will tend to slide forward and put pressure on your hands. You need to work with the overall fit of your bike rather than looking at the place where you are experieiceing symptoms... like if you are having a ear attack and all you do is treat the tingling in your arm, it isn't too helpful.