I can admire the design of the product. I actually think it is clever. However I cannot ever imagine using this. I think it has too much going on. On a conventional safety, you can visibly see on or off. And it is an easy to learn up/down lever. (probably the only major complaint about Ruger P-series for me, backward safety from everything else I own.)
I could see too many infrequent shooters attracted to this for the safety aspect, only to fumble in the actual use. I can see some person, pressing the trigger, to confirm it being "locked" and being wrong. Or vice versa. How many of those NDs have we seen with a conventional safety in the newspapers? Don't give the once in a blue moon shooter something else to screw up. Keep it simple. If you want a gun with a safety, get one. If you want a gun with a lock, buy a lock. Or a safe of some type.