The article actually mentions this (and an Israeli defense contractor is a one of the few that's lobbying for it.) I think the key difference, from my understan

The article actually mentions this (and an Israeli defense contractor is a one of the few that's lobbying for it.) I think the key difference, from my understanding, is that it has never been deployed onto a convoy. Also the "Iron Curtain" relies on the projectiles being lobbed instead of shot directly, since the people shooting those projectiles into Israel don't care who they hit military or civilian. It has been interesting watching defense move along, from the Patriot missile program, to the Iron Curtain, and now something that is mobile and can take on smaller projectiles.