As a reminder, Gallade got a massive buff with Sharpness:
Without Sharpness, Toxapex can recover off Gallade's best STAB:
252 Atk Gallade Psycho Cut vs. 252 HP / 252+ Def Toxapex: 120-144 (39.4 - 47.3%) -- guaranteed 3HKO
With Sharpness:
252 Atk Gallade Psycho Cut (105 BP) vs. 252 HP / 252+ Def Toxapex: 180-212 (59.2 - 69.7%) -- guaranteed 2HKO
Oh, and Sacred Sword becomes 135 BP (before STAB) that ignores defense boosts and has no drawbacks
Lacks the set versatility but functionally hits a lot harder than Iron Valiant on the physical side. I think Scarf and AV sets might both have a role to play in early OU.
Gardevoir might also have a niche, as Scarf Healing Wish and copying weather-based abilities with Trace are both really powerful in offense-oriented metas (and there are a ton of scary new Dark and Fighting types running around that don't appreciate eating a moonblast).