I inadvertently ended up with one of these. I put it in my cart when the thread was originally posted, to come back and take a more careful look at it later. Well, my wife purchased a few things and it came in the box yesterday.
I recently wired up work lights and aux lights, so didn't want to go thru the effort to add another switch and running another set of wires for a dome light. It won't be high use for me, so batteries should hold up well.
I mounted it on the same bar as you at the center. My Honda cargo bag comes down to it, but does not block it. Pointed it toward the dash. Seems to provide enough light to see and check on things.
Thx.