Flights aren't really much shorter, just tremendously less vibration in an electric setup. The electric setups are routinely using only 55 to 60 MAH per flight. Tested and verified more than once.

What I am not seeing here is the use of LiIo technology unless it is being confused with LiPo. LiIo is much more stable but heavier than LiPo, but not as heavy as NiMh. Almost all our planes are now on LiIo w/ a regulator. Other than using a LiPo/ LiIo capable charger I don't treat them any differently than the other technologies. LiPo however needs to be monitored more closely while charging and we take the battery out of the plane to charge.