Well... IMO, it's like this: if you stay away from clusterfuck situations, agi build works. But, If you are facing more than one guy, you are screwed, because you just can't finish any of them fast enough. I still say 6PS is minimum for decent playing. Hell, you can even go as 18/24, if you don't waste points on IF and weapon master.
I have something like this in mind:
Strength: 18
Agility: 24
Hit points: 53
Skills to attributes: 14
Ironflesh: 0
Power Strike: 6
Shield: 0
Athletics: 8
Riding: 0
Horse Archery: 0
Power Draw: 0
Power Throw: 0
Weapon Master: 3
One Handed: 1
Two Handed: 132
Polearm: 1
Archery: 1
Crossbow: 1
Throwing: 1