Team looks very nice, just a few nitpicks.
Whilst you're certainly capable of taking out opposing SS teams with ScarfToed, Loom and Gliscor, I don't think Gliscor is needed (as you said). To help counter opposing Rain teams that could outmuscle you, I suggest putting in a Dragonite sweeper. It has amazing utility under the rain, and after an Agility, it outspeeds pretty much anything.
Dragonite @ Life Orb
[Whatever you prefer, split it into Atk / SpA / 252 Spe]
-Gale (Or Hurricane, whatever it's called)
Many teams are unprepared for it, and MultiScale always lets it get up an Agility (if it's at full health).
My Pokemon Online username is Contest Master Majin.