One of the best Klarus-features: the dual switch with the no-memory-UI. Absolutely great!
My advice: don't try to build the brightest flashlight with the most lumens at all costs. That is not necessary for such flashlights. Keep your focus on reliability! The switches, the electronics - all these components must (!) work under all conditions. Build you flashlight to work without failures. A non reliable duty flashlight is a no-go, regardless how much output it has.
And yes, I have Klarus lights and I recommend them for LEO use. But there is always room for improvements..