+1 on the metal seatpost for wrenching. Most of the time at my clinic,I just hang the bike in my stand by the saddle,I only clamp it in if I'm going to be really torquing on something.
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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