I had the same problem, you CAN get it in act 2 on a quest I think - but I found it in act 3 after I already had much better stuff, and I was like "so THATS where it was!". I can't remember where now though..
the wiki says.."Found in a grave in the Mountain Graveyard just beyond Sundermount Passage during Act 3."
..oh I was wrong. It appeared on Merrils quest now I think about it - a bit pointless as I already had most of the champions gear by that point!
ok...not in Sundermount (at least in act 2)...not in Mountaintop Graveyard either (other cool stuff though)... this is bad design imo...my rogue has full set of equivilent armor (forgot name) while still in act 2 --- XBL---Shanghai Hepcat
I tried after doing (just about) every quest (may have forgotten a couple times) to see if it would become available in act 2...it never did. I can not get it until act 3 --- GT: Merenwen 812 AC: 0216-7187-9098 Merenwen@Opaltine....www.esoevil.com
thanks for all the input...mage is in act 3 now... hope this helps anyone who searches for this topic...if you want the full 2nd act set of armor in the 2nd act, play a rogue...weak Bioware...weak --- XBL---Shanghai Hepcat