How do you tell if Permanent NX item really is Permanent?

I love how one morning of duped perma equips over than four months ago still makes people afraid to buy perma equips. I had a Cat Hood disappear on me but that was clearly a Nexon glitch during a server check, because I inexplicably got it back in Frederick in the next SC. Fearmongers gonna fearmonger.

Some items, like rings, don't give Charm.

I don't think I am a fearmonger if that's what you're implying. o_o''

I'm just concerned what I buy or not buy since I am low in funds.
I'm just researching before I buy something...
I don't have max mesos like some others do. I mean I wish I did.. e.e