No Slow Down Mod - Is It Allowed?

I would think it isn't allowed, as it gives you an advantage in pvp simular to the mods that make you instantly draw your bow or instantly eat food/potions
 
It gives you a big advantage in pvp to those, who don't use this mod.
So I would guess it is not allowed.
 
It might as well call as Pvp Hack Mod ._. I mean seriously! If you go on a HungerGame server or you are raiding on Massivecraft the chances are the one with this mod Wins!
 
This alters a mechanic in Minecraft, I am 99% it is not allowed. However, I can not speak for the staff.
 
Whenever you want to know if something is not allowed, ask yourself this:
'Does it provide me a significant advantage over others?'
 
I doubt such a thing is allowed, considering its never allowing you to slow down like other players, giving you too much of a distinct advantage over others.