Yup. I've observed this with the P3 and the Felt DA. In the wind tunnel, a Campy biodinamica was slightly slower on the P3. In field tests, it was either very slightly slower or very slightly faster. I believe Scot had the same results in the wind tunnel.
By contrast, an Arundel bottle on the seat tube of the DA is not looking so good. I haven't done the all-out formal test yet, but it's looking measurably slower.
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