Well I've battled on through Chapter Six with the Drow armour! The trick of giving Jahiera the amour and then sacking her does really work. Provided you have not completed the Harper's quest she's there standing at the hall with the armour. She doesn't half give you a roasting for sacking her though!

I sold the excess but kept the chain mail for the magic users so they can still cast and a full plate for Minsc. After the short walk though this Chapter I left the amour before entering the Underdark section as you get dusty when entering. I wonder if it was worth it all since meeting the Drow and the elves battle you can get the Elven chain mail?

What is the Harper's problem, Jahiera left leaving a tear stained note, only for the team to go chasing after her, to then being attacked by Harper with Jahiera being remorseful at having to kill them.

If you have the latest Infinaty Engine Editor Pro you can change what shops stock so you can buy Drow armor and not bother with all that silly jahiera stuff .also elven chain mail is pathetic

also, if you want to wear drow armour on the surface, simply use cluaconsole cheats to bring forth a drow warrior, kill him, loot him, and forever wear his armour proudly