With the side view mirrors that Ford has been using that have the built in convex blind spots mirrors isn't the BLIS system a bit redundant? I like the mirror on my Escape and the Edge I just traded in. They work great for seeing what's in the lane next to you. The Subaru I just purchased didn't have these type mirrors. So the first thing I did was buy a set of stick on blind spot mirrors. Ugly, true, but it gives me piece of mind. But I've always used them. I can't swing my head around well. Stupid accident saw to that years ago.