Ok, the light finally landed in my hand today - on my way to a job where I actually got to use it
As others have said it is beautifully made, heavy, solid, well engineered, very much like a good SLR lens. It's a serious bit of kit.
Love the power, love the focus range - wide flood to tight spot, easy to find a middle ground that gives a good mixture of center and spill. It is definitely the best flashlight I own. The power gauge and M12 pack is the icing on the cake.
But I have to say, the shape IS a bit bizarre, and I don't get it. Why was it so important to have a round aluminum body, that they actually 'bulked out' the battery compartment so much to do it? They already have a somewhat ergonomic battery shape, why not use that?! They could have had a nice over-molded handle grip to match the battery, then have the aluminum part emerge from that - something like this (pretend the button isn't on the side):
Anyway, JMHO.