I have some older 1 Watt L2P's with some spare L1P bodies so I have them set up so I have one single AA attached to my pack and a 2 AA for when I want either more light or a kubuton. I love my Fenix lights they are very well made for the price and mine are the premium versions with the better LED's. Eric is working on a nice
sheath for the L1P's. If you get the 2AA L2P you can get a CR123 body and swap it in. You can't do it with the single AA because the LED is not strong enough. You can also make a 2AA a single AA but you can't(or should not) make a single a double. I actually have a spare L1P body and tail cap(clickie)if anyone is interested?

I chose AA because I live in the boonies and CR123's are very pricey and rare.
The rechargeable AA's are great though.

Fenix also makes an excellent little liner lock folder with a spear point blade and G 10 grips that i would highly recommend.