I think the IL are alot like the mag disconnects... people hate them,. So they spread as much bad press about them as they can. I have only heard a handful of times where they have failed. Durring my time working for a FFL we sold thousands apon thousands of smiths with locks... not a single one ever came back do to lock failure... Infact I can only recall 1 smith revo that came back for warrenty work, and that was a sight insert that came out. now ruger on the other hand, sold about the same as smith, but we got one back atleast once a month.