That is not a move combo. That is a strategy. And it works well, it is not a gimmick. Braviary itself is a gimmick without Sheer Force, anyway, so Bisharp and Competitive Milotic are the best users of that strategy.
Milotic is pretty weak. It seems great on paper but is outclassed by pretty much every other defensive Water-type and offensively, there are better Pokémon so Defiant Bisharp is your best bet.