Did the Greeks ever adopt foreign equipment ..

[Macedon]

I don't personally think it really matters if he is archaeologically wrong, that is whether the Carians really made the inventions or adopted the grip themselves from someone else. What matters is that there was such a belief in Greece at Herodot's time at least among certain circles. It is just another example of a prominent Greek admitting to foreign imports in matter of military equipment.

We also have to add to this list the wedge cavalry formation which was admittedly (by the Greeks) adopted by the Thracians and Scythians.