Stop comboing Tactical Visor with Grav.

Why are people doing this? This is like the most useless combo I can think of and yet I see it quite regularly.

When stuck in Grav enemies are sitting ducks anyway so why would you use Visor? You should quickly destroy targets in Grav without using Visor and then, in case the fight isn't won yet and there are heroes like tracer or genji left alive, use it to clean up.