I actually have a question about slows (this is a bit OT but whatever). How exactly is the slow applied mathematically? Lets say that I take Boots of Speed and Anklets (25% speed boost) but get hit by a 25% speed debuff. Is it:
Situation A: Base Speed x (1.25 - 0.25) = Base Speed
or
Situation B: Base Speed x 1.25 x .75 = .937 Base Speed
This is actually a bit of a difference because in Situation B, slows actually dominate speed buffs because even if you have as much speed boosts as the opponent has speed debuffs, you still lose. This would add to the "Slow items are better than Speed items" debate.
Anyway, the main issue is that you have to be very careful not to get caught in 1vX situations where X > 1. You arent going to slow down multiple opponents consistently (unless they are foolish enough to all hit your mines) and you are going to be either very lacking in speed or HP for yourself since you are filling all your slots with slow items (and mana items).
The other thing to note is that apparently the W. Gloves and PD have only about half the chance of slowing with ranged attacks over what they are listed at .
The build is certainly still strong, especially if you have consistently good teammates, but you do have to be careful about a few things.