Went in here the other night with a 70 warrior and 70 cleric. This is in the room north of where IV spawns. You can invis all the way to this room but there are traps set all along the way and if you trip one you will have 3-4 lb or blue see invis mobs on you. Nothing terrible just pull to the wall and finish them. The actual room in which these guys spawn is mostly filled with mobs that do NOT see invis. If there are see invis they are in the ring of chanters on the floor. The Alutinae themselves don't see invis. The best advise I can give is have snare or root ready as they will run when low and if they get far enough they will aggro the rest of the room which is a pain and nearly impossible to handle if soloing. I used my Reagent Symbol of Innoruuk which has a low lvl SK snare and it worked fine.