If you're too foolish to check the chamber in a traditional manner, you're quite possibly too foolish to check the LCI before doing something stupid.
All of the guns I own that have such things just have a simple cutout in the chamber hood- nice, unobtrusive, and it's easy to tell if there's a round in there... it's no easier than doing a press check, but whatever. The ones that require some kind of lever/bump/whatever to protrude seem to me to be overthinking things- just another collection of parts that serves no useful purpose. Sure, the one thing they may bring to the party is the ability to confirm a loaded chamber in the dark, but I've not found that to be a needed item- any guns I'd need in the dark I can tell you the chamber status of right this moment. If you wait until it's dark to check that status, you waited too long.
I wouldn't avoid a gun that had such a thing for this reason, but they just seem to be the answer to a question asked only by people who didn't know what they were talking about in the first place.