Reppans, that is a good point. Do you have an opinion one way or the other?
I do tend to use low output fairly often ... but not as much as @reppans does
As Arch knows, I'm a night vision/runtime nut. About 90% of my runtime is split between 0.3 and 3 lumens. QTC is not ideal for my use since it tends to expand/settle over a few minutes, resulting in small wattage changes that will cause output to shift (increase). It may not be significant, or even noticeable, if you tend to use medium+ outputs, but at the low lows I use, small wattage changes will shift output by multiples.
Also, although max represents a very small % of my runtime, I do use it frequently with a momentary-max-from-ON function that works like a car's high beam flashers (eg, 3>300>3 lms). I'd say I activate max ~50x, for a cumulative 30 secs, per day.
FWIW, I have output/runtime tested my El Cap for sub-lumen efficiency with some of my collection and I found it at the very top of the pile for efficiency (although due to low lumen output volatility it's hard pin average output). I really should have bought a momentary plunger with mine since the Peak is one of the very few lights that can do the momentary-max-from-ON thing, and that's my favorite UI feature.
A fixed output light is no go for night vision/runtime guy... personally, I'd get QTC with momentary plunger, and source extra QTC pills to swap in if worried about it wearing out. Never done it myself, but I heard it's easy.