I have one of the originals without safety. Just one liner and liner lock. As a "tactical", it is a downright dangerous p.o.s.
If you use it, treat it as if it has no lock whatsoever. That's usually sound advice for any folder, except a "tactical" folder supposedly capable of using the top edge for backslashing techniques etc.
I wouldn't bother with that knife at all, unless you get a custom version, which is available, or, as I said, act as if it has no lock at all.