So I thought VS rep was useless!

[Taiku]

So I thought the rep with Venril Sathir was worthless and that trashing it by killing ogres in TD wouldn't be such a bad thing, I hunted them for about a leven and a half. I invited some friends to group up over there, and one of them mentions that now we couldn't get the OT hammer easily, or at least because of this rep being low now, that we would die after using OT hammer. I'm an Iksar Monk, and I was looking forward to having that little port weapon available to me at some point, did I screw myself? Is this really the rep I need? Are there ways to mend the rep without throwing away another important rep?

And as a side note, are there any other reps I should keep in mind not to screw with if I want to get some cool things in the game? I'm always nervous killing new stuff, I haven't killed any sarnaks yet, or many goblins, just because I haven't researched those reps yet!