Yeah,makes no sense.
Most of the time at my clinic I just hook the saddle horn over stand's arm;I only clamp the seatpost if I have to really torque on something. I can't imagine either the stock steel or ti seatpost being damaged from a properly adjusted workstand.
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C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Brompton S6L/S2E-X/M6L-X/S12 T Line