I really don't see strongman hiding anything. Strongmen are very gear whorish. Straps, wraps, sleeves, sleeves with straps, suits, briefs, double belts. Its all about moving more weight. Plus a lot of strongman events require movement. Hell I would use a suit if it was allowed on squats. Save a lil bit of energy for really tough events.
I'm actually prepping for my first strongman comp. Initially I'm going with just belt and wrist wraps but if I keep competing you can bet your ass that I will have those hip warmer briefs, extra belt, and maybe even a single ply squat suit.