Let's discuss it here!
The lever lock (that is a custom lever lock, not a Leverletto, BTW) is probably the safest auto mechanism made. When closed or open, the lever is in the down-or "safe" position. Only when opening or closing the knife is the lever folded up. This mechanism is not only safe, but easy to use. The blade construction at the tang is stronger than most plunge locks.
There are videos on You Tube of lever locks operating. Just do a search.
Here is a picture of a custom Leverletto that I made.
Here is a picture of a custom lever lock I made, with the lever folded to the "locked" or "safe" position.