Thanks for the reply, but I don't think Black Cleaver on Urgot is a good idea.

It's a good item but I prefer to make Urgot Tankish, people are consider him a squishy carry AD and they will try to 1vs1 you, particularly in late game when they think that you "should" become useless
(for example, some days ago I was 1vs1 against a Olaf, both almost full build but I had Thornmail+Last Whisper and I won even if he used Ignite+Exhaust, it was fun to see how much he was raging :P).

Urgot have enought ARP from Last Whisper + Masteries + Dominion, so I focus only on AD+CDR|Hp/Ar/Mr. With Brutalizer and CDR boots he can Q-AutoAttack-Q, I prefer 0 Attack Speed on him

First of all, thank you because this guide is really helpful at first.

Brutaliser at the beginning, with a similar rune page (except I use Quints of armor pen instead of more damages. With Brutalizer, level 3, I do 97AD, 31 armor pen and 21% armor pen.

Because of the game calculation sequence for armor pen : (Armor - Armor Pen) - % armor pen, I prefer to rush black cleaver instead of Atma, and depending of the situation, going on Frozen Maillet or Entropy, depending if they open me quickly or not.

For commenting your post, Osheroth, I tried with 2 points in NCC at first, but as it has a "big" cooldown at start, with the damage each rocket you lauch is over 120AD, NCC should only be used to destruct mass of minions, or to target a champion because your Q attack is "NCC searching". It's the only use I see for NCC and I agree with the autor of this guide about maxing Q and W at first.

One change that I'd suggest is to start off with 1 point in Q(Acid Hunter), and 2 points in E(Noxian Corrosive Charge). No points in W (Terror Capacitor).

I find the Terror Capacitor to be less useful in the early fight. E-Corrosive Charge gains so much more damage from 75 to 130 for 55 additional damage to help clear the lane and if you stick it on the champion Q is more likely to lead to a kill.