Here is a video of Abraham de Villiers’s pyro technique in T20. Playing both horizontal/vertical shots in a unique way.
Here are few pictures of Kim Hughes (former Australian Test captain) playing horizontal and vertical shots in his own style. He was one of earliest batsmen to employ pyro technique!.
Here is a video of my understanding of horizontal/vertical shots. Hope am making some sense and it is useful.
Here is a link to detailed explanation on how H V shots.http://allthatcricket.com/?p=3525