COPs are really optimal stat boosters. On my Dual-spec bear (STR/DEX: 142/142) I use these sets:

STR Booster: Fortified COP, Iceberg Black Axe/Frozen Shield, Battleforged Plate of Destiny (178 STR at end)
STR Loadout: Royal Sewer Helm/Plate, FF Sword, Bellows Shield (yes, I love dodge on STR set)

DEX Booster: Customized COP, Shivering Black-Ice Dagger/Force Wing of Void, Mynas Plate of Horus (182 DEX at end)
DEX Loadout: Customized Recurve set

The high stat booster of COP allows to wear the dual handed Customized Recurve directly from loadout - quick switch!