I have CompPsi, and I actually have experience with a Lurk. The nearest comparison is with Rogues, but it is not exact. Bards or scouts also have parallels.
- Same BaB
- Good Ref and Will, not just Ref (like Bards)
- Power gain is closer in line with PsiWar; separate power list
- Can augment any melee attacks with ever increasing abilities.
- Ok skill points, but half of rogues
- No trapfinding
Lurks play like skirmish fighters with psionic adaptation; their powers assist this role. They do not seemed nerfed to me.