Excellent review, I'm very intrigued with this new control style and what it means ergonomically speaking. One of the biggest advantages to the rear clicky is that you always know where the switch is. The ring switch of the S2 eliminates that question while still allowing you to carry the light in a more relaxed position. very interesting in concept and I can't wait to see it in practice.
I definitely agree with you however in the desire to see CR123A support. I use them exclusively at the moment. It may be time to look into some RCR's. It is always a big bonus though to be able to pop in a primary if the rechargeable dies and you don't have time to recharge or have a backup ready.
Just a little thought to the logic flaw there. If your primary dies then you have to have a primary battery as backup to keep using it. So either way you need a backup - might as well be a rechargeable so we can quit dumping in the landfills. I've gone almost totally Recharageable and have enough so I've always got a backup and enough chargers that will run on almost anything from AC to 12V to solar so no reason for having a bunch of primaries sitting around gathering dust. Get some RCR's - you'll be glad you did and you've got guilt free lumens
Now for you selfbuilt - you've really got to stop doing these reviews! They are like a super AD and are doing serious damage to my wallet
but happy :laughing: