I'm primarily a 1xAA/14500 sub-/low- lumen EDC guy but bought the D40A just because they stuck a sub-lumen mode on a power thrower, and I suppose it's nice to have an 800+ lumen thrower in the portfolio - I love the light. It's nothing I would ever EDC, but I'll always it take camping (vehicle/RV, NOT backpacking) with a DIY lantern diffuser for outdoors or for ceiling bouncing in a tent or RV. It's significantly more efficient on a lumen-hrs basis compared to my other single cell sub-lumen lights, probably due to the higher forward voltage (less boost reliance) - I've gotten 250+ hrs from a 9V on moonlight mode. This will be one of my go to power outage lights.
Also use it for dog walking occasionally, and like most lights I (we all) own, it makes a great show-off light. Love walking around on 1 or 15 lumens (I like my night vision), and come across some guy using a giant D-cell mag light. If he starts swinging his big 130 lms around..... I thoroughly enjoy making it disappear
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