Should do, yes.
I'm now just going to slap an Everstone on my current Frogadier (Hasty) and breed for Protean Froakie's that way. Still got a + Speed nature.
EDIT: Got a female Frogadier with Protean. Awful nature, but I can breed to get Protean Froakie's. Now I'm off to get some Dittos. Well, I might take a break and EV train the male Frogadier. Then I'll make my Battle Maison team. Think it'll be a Hail team, with Mega Abomasnow. Sets up Hail and brings pain to the opponent. STAB Blizzard and Energy Ball/Wood Hammer will deal a ton of damage.