Fun fact: It actually works against the Admins.
Registeel killed two of Cliff’s Pokemon in a row.
Registeel finished Alakazam.
Bonus: It can kill Sierra’s Lapras.
Tried against Arlo with Scyther Crobat and Scizor and that run fell flat horribly (Barely won with Giratina in red), but I think it might work vs Magnezone.
EDIT:
A much better Arlo run. It might work if Scyther was bringing Air Slash instead of Fury Cutter.
Never saw any admin using Gardevoir, Dragonite or Torterra, which I might probably test run against.
Try it, really interesting Rocket Admin/Grunt counter, plus it lacks a Dark or Ghost weakness.
