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Mud2 is a fairly supple tyre, some of the cheaper Scwalbe versions look like their supple pricier Scwalbe siblings but can be heavy and stiff. Noticeably slower than a supple tyre at low cx pressures (40psi) but ideal on gravel at higher pressures (60psi).
Personally, I'd ride the Schwalbe regardless and save the mud2 for slightly more intermediate conditions where you will need the grip. But then I'm fat and slow so a tyre ain't gonna slow me much.
Are the schwalbes wired or foldable? Performance or Evo? If the wired or performance I'd run with the muds, paradoxically