Warhero is/was JOG.
Wall runs are perfectly fine, we've mentioned it many times here. Hitting block at the top of a wall run is very smart as the occasion usually means an enemy is on the roof.
What your counterparts in JOG tend to do is slow run once they hit the top of the wall to avoid choke and still gain energy (not allowed).
Feel free to watch me use a wall run properly anytime :)