Update: I'm pretty happy with the lights so far, though haven't travelled much more than down the street at night.
It seems the fans are speed sensitive to how hot they get, as they are quiet at startup, but after a 200 mi ride they were louder. One fan/heat sink was warm to the touch, the other was much hotter as in could only touch for a few seconds. Have a note into Evitek over the concern. Even on "high", the fans don't seem to move any air. The regulators get pretty hot as well. I used velcro to hold them to the inner cover yet allow easy disassembly, would be careful about burying them with no airflow.