In my opinion the hood rack is mainly an item that is for looks. I say this because it's already hard to see what is in front of these things and that hood rack will really compound this issue while off road. I wish mine didn't have the scoop as it gets in the way of my sight.
The one thing I can think of that would be ok to mount on the hood rack would be a solar panel since it will out of the way and leave the entire roof rack for other stuff, but it will still severely hurt your sight lines. not worth it to me. YMMV.
I really like the roof rack. Would like to know how easy it is to attach things to it with it being so low profile. When you get a chance please post up more details on it. Thanks.