The requirement to have both hands the same direction makes me wonder if they paid out too many times before establishing that rule. The idea behind it is likely aimed at the modern gym rat body builder concept of strength, where beef is prioritized. Beef is more heavy than strong, and greater usable strength is often less bulky. Carpenters and roofers that don't go to the gym would be my bet. I've seen big guys with gym muscles that could not lift as much as me in practical work situations, and I was 6'2" 155lbs so looked pretty skinny. Not sure why, maybe use of machines targets visuals but fails to tie the muscle groups together with the other supporting musculature? I love (or used to love) rock climbing too, and could hang from one hand comfortably, even with just a ledge to grab. I would climb street lights randomly by grabbing and walking up. Two minutes is indeed a long long time though. A fine trick on the part of the business!