I don't believe there's a separate HT Cat in any of the series (Correct me if I'm wrong) only Age/Gender Cat's...
It's a "Ride what ya Brung" type affair, there's bound to be people on HTs, and there's always the argument that a HT will climb well, could weight less and save your legs on the way up, thus giving some advantage in terms of fatigue on the way down...
