I've used power Split Shuckle on SS teams before. It's very gimmicky and hard to pull off but if you can do so successfully, it's an amazing feeling to sweep with a Shuckle. Personally, this is what I ran:
Shuckle @ Leftovers/Grip Claw
Sturdy
Impish Nature (+Def, -SpA)
252Def, 252HP, 4SpDef
SpA...