So the HP45X in medium is a success.True to their nature they are pretty anatomical fitting but as far as waist size goes, I think it's perfectly fine. Large would have been way too big, especially if other guys here are alluding to that weight differences are like 15-20 pounds, as far as how much bigger a person would be for each size.
I think I'm going to buy a pair of HP70X on PSH just for fun since there's a medium pair for only $80. Doesn't hurt to have a backup pair.