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Allied said laminar airfoil actually reduced drag in P51, but german believed it's an impossible goal when Reynold Numbers is high(real flight ).
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I own and operate an aircraft with laminar flow wings.
You have to keep the wing and leading edge absolutely spotless and polished to see any benefit.
Dirt, bugs, and a rough surface will destroy the laminar flow drag bucket.
Lastly, the benefits of a laminar flow airfoil is not a factor at Vmax or Vs. It occurs in the vicinity of the cruise design point.
Look at the polar for a laminar flow airfoil.