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ScarfTran is a thing. I mock it regularly, but it is a threat if you aren't fighting a weird bastard like me with a strong hatred of Heatran and a fetish for deovoting half a team to countering it.
You outrun with Modest; Jolly Brelom would be worthy of outspeeding if you don't like Saftey Goggles though. Other (BAN ME PLEASE), yes. Watch for Shuca, but you can run the same trick and always win, etc. Yeah, I would do it.
Bisharp/Breloom are usually Adamant; Modest (BAN ME PLEASE) outruns Adamant Breloom. Jolly breloom vs Modest (BAN ME PLEASE), outruns yes. Sash + 2HKO from Mach Punch makes natures moot though.