Most blade with airfoils on them have the wing mounted on the arm, not the blade. Virtually every car in the last 10 years can use the full replacement wiper rather than an insert without loosing the airfoil.
Plus those rain-x/bosch/etc single piece blades all have airfoils built into them. I've been using the Bosch blades, they're pricey, but they seem to work pretty well.
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