Nightblades aren't about "finding" people they're more about just killing people.
In my view nightblades are all about the offense and I think see invis is more to not be ambushed than it is for killing people.
Besides, unless a nightblade is killing another nightblade the invis would (or should anyways) end on the target making it a non-issue.
_________________________
If you say plz because it is shorter than please, then I will say no because it is shorter then yes.
