Played first time round in robes, second time round in the Zeison Sha armour (just to see if there was much difference), and now I am wondering about third time round...probably back to robes...
I did think that the KOTOR 1 robes looked far neater...and they looked better from the back, and face it, you have to see your characters back view constantly, KOTOR2 robes seemed to have this, well, floaty feel