blades67,
Nothing negates the need for a visual clear of any firearm. A loaded chamber indicator is a mechanical device. I would treat it in the same fashion as a safety, nice to have, but never to be relied upon. I know exactly what you mean about the acrobatics that some people go through to clear a firearm. The cure for that is more/better instruction. A loaded chamber indicator will do nothing to help anyone to clear their weapon.
As I said, they may well be a boon to people who are well trained in the use of firearms. They are useless to those who need to learn the fundamentals. Imagine a Lorcin (or insert your least thought of pistol here) with an LCI. After about 2 rounds it goes winging off into the bushes. A couple of minutes later Gizmo says, "Gee! I didn't mean to shoot 'em. The LCI indicated that the gun was empty."
The practicalities of an LCI aside, the need for these devices (on everyones gun) is a total fabrication. Once again liberals wish to put responsibility on the "shoulders" of inanimate objects. Period.