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@Zdrenka
Hmm. In a low spokecount aero wheel the hardest thing is to atain the nessesary spoketension without breaking the rim or nipple so I can sort of see your point, but I'm fairly sure that only having half the strength of a SS spoke woun't be adequate since low spoke count wheels tend to push every component close to their maximum limit considering the large dynamic loads.
Actually lets make a quick calculation: An aerospoke is essentially the same as a flattened 1.5mm round spoke giving a crosssectional area of 1.767mm^2. In a rearwheel we would most likely need around 140kgf (= 1.373kN) of spoke tension in the driveside of a wheel with few spokes. That leeds to a tension of 777 MPa which is beyond the TZM's breaking point. Even if a lower spoke tension was used it would most likely fail under fatique after a short amount of time.