I'm sorry, I missed this discussion then.
As for the first question, I think I agree with topic starter. But due to some lack of information about this device, maybe somebody knows what will happen when I try to lower landing gear lever without electricity onboard? Does lock will engage or lever won't move to down position?
Regarding Landing Gear Lever Warning Light I should agree with BBRZ, because it works how it is stated in flight manual:
1) One or more gear unsafe - this happens after doors are opened or with some failur with locks
2) One or more gear doors are open when landing gear lever is up - this happens when we are retracting gears or with some failure.