@blasphemy1: Linoone outspeeds Scarf Hitmonchan after the Salac boost anyway so no Hitmonchan can switch in on Belly Drum. The only notable priorities faster than Linoone's Extremespeed are Floatzel's Aqua Jet and Persian's Fake Out, the latter of which is useless after the first use, and both would have to be scarfed (or, in Floatzel's case, in rain) to outspeed Linoone after the Salac boost.
Adamant Scarf Floatzel's Aqua Jet vs 108 HP/8 Def Linoone: 28.70% - 33.64%
Adamant Floatzel's Aqua Jet vs same Linoone in rain: 41.98% - 50.00% (87.77% chance of KO with SR damage, 0.07% chance without)
So even other priority moves do not get the better of Linoone.
Adamant Scarf Floatzel's Aqua Jet vs 108 HP/8 Def Linoone: 28.70% - 33.64%
Adamant Floatzel's Aqua Jet vs same Linoone in rain: 41.98% - 50.00% (87.77% chance of KO with SR damage, 0.07% chance without)
So even other priority moves do not get the better of Linoone.