Getting a charger and a second set of batteries for backups for $41 will net a savings of about $800 considering a 12-pack of batteries costs $20. So, even with the reduced runtime, this should be attractive to anyone on a budget (read, all of us!).
But, there are some caveats worth noting when using rechargeables in flashlights. Rechargeable batteries have a little power spike as they start to deliver power. Surefire's LED lights can deal with it, but the power spike can cause older incandescent bulbs to burn out. So, stick with the primary CR123s for vintage lights.
