I must admit I was quite excited to see what would happen if Zevlor wasn't there, but it didn't change by much in terms of dialogue choices as it just added a [DROW] option. But still was pretty cool given how emotionless of a response it is, just makes me wonder why we can't say this to Zevlor.
Though I'm quite glad you mentioned this as I never experienced the raid with Asharak. I must say he is just as good as Zevlor in this scene, love his passion and the sudden realization when the gates are opened ^^