>>58634958I tried Furfrou for a few days, and then tried Watchog for a few days. For the most damage with Normal Gem + Giga Impact, then Watchog's better since you can set up with Swords Dance (Furfrou only gets Work Up). Otherwise, yeah, they're pretty interchangeable.
What I liked doing with Furfrou is, instead of running a set-up move, giving it a Silk Scarf and doing Double Edge + Giga Impact back-to-back on the same target. Other moves were Wild Charge for Gyarados (one positive it has over Watchog), and then Ice Fang for Garchomp.