i gave this a try, i like the idea of building around the trin force. it doesnt do as much damage as my way though and i prefer that

I like it. I get boots first and then brutalizer and no doran's blades. you can get brutalizer at 5 minutes on average every game. it is a lot scarier than any piece of tri force.

Seems quite good. But one thing I don't get, is that you don't take the last 2 points in Utility instead of 2 points in Sunder. 4 armor penetration < 15% of summoner spells. Summoner spells 2gud - also if you decide to grab an Ignite/Exhaust (which is really good options beside Flash).

I like it though. Items are spot on, I think, and runes are good too (however, I prefer armor because it's the safer choice. Since dodge is %, you could, in theory, end up dodging very little - please read the forum discussion about dodge/armor seals for more info). You could switch the two ArmP quints with two HP/5 quints - they are kinda badass, especially together with Garens passive.

No more to say than +1 for a nice build/guide. Not beautiful nor in depth, but nice as it is. How I like it ;)

EDIT: and if you are to trust LoL-wikia, Garen's ult benefits from Archaic Knowledge . See: http://leagueoflegends.wikia.com/wiki/Archaic_Knowledge