I see the point your trying to make, and I'm not trying to offend or step on anyones toes. I just dont think that a ST is gonna be much for towing which is normally what a duelie is for. 4.0v6.
There are different levels of offroading, the set up I had on the ex was perfect for what I took it through. The BWM was for gas mileage so not sure where you were going with that.
I think what you have done to your ST is more useful than the duelie concept.
But ultimately yes, to each his own. Entertaining to look at though...