Beamshots coming when I remember to bring the camera on the way to work. (And I need to do this some day when it's not icy like it is around now)
The optics are pretty good. No sharp edges or hotspots, no light wasted in the sky. But not the ideal light-at-the-top trapezoid that you get with the IQ-fly.
I didn't end up wiring a standlight. Or even a smoothing capacitor. Completely minimal. This does mean that the light goes off when I wait at an intersection and flashes at very low speeds. But the combination of these is actually nice: when I just start off across an intersection the flashing makes me very noticeable. I also ride taking this into account and avoid stopping, slowly approaching red lights. But I would do this anyway, as I do in a car, to avoid wasting momentum.