So I've been thinking of making a Doubles team, and I think I came up with a good strategy for Lopunny and Furfrou.
Furfrou@Whatever item (turns out mega stones can't be switched )
Nature: Jolly
Ability: Fur Coat
Moves:
Cotton Guard
Zen Headbutt
Wild Charge
Headbutt
Lopunny@Assault Vest
Nature: Adamant
Ability: Klutz
Moves:
Switcheroo
Drain Punch
Dizzy Punch
Ice Punch
So here's what I'd do:
Furfrou uses Cotton Guard, and Loppuny uses Switcheroo to switch the Assault Vest with the item (thanks to Klutz, Lopunny can still use Switcheroo despite holding the Assault Vest). Then I can have Furfrou tank everything like a boss thanks to the boost in both of its defenses.
One last thing: if this could work, how many speed EVS would I have to give Lopunny in order for Furfrou to out speed for sure?
EDIT: Turns out mega stones cannot be switched, so I changed it up a little.