What a drag
I have the miniQ's but do not attach them to my mask because it feels unbalanced, as if my mask was listing to one side and is about to come loose.
When I attach a light to each side of the mask, it is even worse.
I never figured out how to aim them properly either, so I found I needed a hand-held light anyway.
Now they serve as backups attached to my belt. They are actually pretty useful for this purpose in case my light fails (which happened once in a dark room). Since the light came on due to the pressure at depth, I didn't experience that panic I might otherwise have if I had suddenly been in the dark and had to grope for my light - it was obvious because it was on.
Is the Princeton light smaller, Scott? I like the concept, but just don't like the was these feel on my mask strap. [this is all academic of course - since I can't seem to find time to dive any more I probably shouldn't worry about gear adjustments.]