Isn’t that picture the 3 leading/3 trailing pattern? And yeah, I think it looks pretty cool!
And horatio, there’s probably a couple of reasons why your theory is true. It could be that in order to start producing radial front wheels, a compan (like Shimano) has to produce a radial-specific hub which is strong enough to take the force of the spoke (even though in both of those cases above the spoke was under 1300N of tension, the direction the spoke was pulling in the radial situation was such that it’s trying to pull right out of the hub) It would be expensive to have to make a ‘radial only’ front hub, as well as your normal front hub, but it doesn’t surprise me that high-end companies like DT Swiss offer this option.
It could also be for looks, and I know that sometimes, mass-produced wheels are built identical front/rear, even though sometimes they shouldn’t be. ie when one of them is meant to be laced asymmetrically, so they lace the other in the same way. Perhaps this comes down to ease of assembly, for it would be far quicker for a machine to produce two wheels of the same lacing pattern, rather than one of each.