I wouldn't do that, since Garchomp doesn't have a lot of staying power if it isn't fast, and Scarf is the only way to make Garchomp faster.
Why? Because Poe's Garchomp set, and Garchomp in general, isn't attributed to being a tank; it's more of a "kill everything". Brightpowder+Sand Veil/Snow Cloak may seem great, but sometimes it's fallen short for me; and leftovers is out of the question.
I do agree with Swords Dance, though. Garchomp doesn't need both Dual Chop and Outrage to fulfill it's needs; remove either one of them.