The SBT90.2 seems to have relatively low efficiency at high outputs but at 1000lm efficiency appears to be 164lm/W for the emitter itself according to djozz’s thread . If the Fireflies T9R driver is >90% efficient as claimed, then at 1000lm output it should be capable of at least 148lm/W with this emitter. That is of course not considering losses in springs, battery resistance, etc. which may be significant. Using 1lumen’s measurements , it looks like it manages 137lm/W @ 1012lm assuming this was tested with battery at 4.1V.
The combination of throw, large hotspot, decent spill, moderate sustained output, FET turbo capability, high efficiency, balance in the hand, and Anduril 2 means this checks off a lot of boxes both as a practical and enthusiast light. Makes me excited for the T1R if they can deliver something like this in a pocketable form factor.