Nice review. I've been heavily researching this headlamp and the one thing that is disappointing to me is the lack of more settings. I would like to run with both beams together and you only have the option of 100 lumens (both on low) or 400 (both on high). It would have been nice to see a middle setting as well.
Thanks for the feedback geepondy. I will post the response to your question in PM here for others as well.
Two nights ago I ran with this lamp again. From start to finish I used it in the wide beam only, lowest mode. It provides plenty of light for me to be able to see and a fairly non offensive warning for cars coming my direction. I mostly run on the streets. Where I live there is no sidewalk and few street lamps. The only reason I would use the spot beam would be on a trail and even then I would still use the wide beam with it.