Druids and Saben Tucross

[Nightblade]

I've been reading around and keep hearing the name Saben Tucross tossed around in terms of a quick respawn for decent gains in exp.

Problem : my wife is currently playing a druid that I duo with, and I don't want to get ahead of her. (I'm the hardcore one, she's not, casual play, yadda yadda.) My question is, do any of you remember if kicking the nuts off of Saben ruins your faction with Silox Azrik (gnome for druid turn in in Ak'Anon), or just the city itself? I have no problem killing him provided that it's not going to come back to haunt either of us and completely bone us when Kunark comes out for epic purposes.

Any help would be greatly appreciated..everywhere I look has a blank faction tag for Silox, so I don't know if killing Saben enough times will ruin it for the epic turn in stuff for her.