Thanks for all the responses.
In my immediate area we have so many deer that the seasonal change to/from Daylight Savings Time leaves the roadways looking like a war zone. So aside from off-road use, I appreciate deep & wide road coverage. I'll have to see how the factory lights perform before I make any additional selections. Also, with no bull-bar available for the NA market, that hole is yet to be filled ( I have always installed non-SRS ARB's on my Rovers).
I have also never driven in a lightbar-equipped vehicle, but I have paid close attention to their growing popularity in my area - almost every pickup and jeep seem to have them. When I do see them in actual use or get to follow one, they appear intensely bright but do not seem to provide useful light (more a huge sphere of brightness). So my guess is these could just be the budget brands?
While forward roof lighting is not an off-road necessity, I do find the high source position allows me to see hidden traps significantly better. Our tight East Coast trails are full of rocks, gullies, washouts, holes and logs - all conveniently hidden behind tight turns and undulations. Like others who posted above, I do want wider coverage and less range. High speed and straight miles is not something I encounter often.