I have been reading many threads about tough solar lately.
My personal experience: batteries on G's keep running for many many years. Much more than expected and much more than they are supposed to last according to manuals and specifications. Specially if you don't abuse the light and the alarms. In short: I don't care about solar and I don't like to check my G's from time to time to see if they gone from H to L. I can change a battery in like 10 minutes.
Would'nt it be great if non solar modules would include a manually activated "Sleep mode" that switched off the display?
This way, we could save battery during long periods while not wearing our G's.
Just an idea...