I've seen low mass arms so attracted by static from the dustcover that they are lifted right off the record! Stands to reason that less static can also attract the arm, even if not enough for full lift-off. So I NEVER play with the cover down. Of course, I've has a Well Tempered TT/TA since 1987, whose dustcover is not hinged, so is set aside during playback. FWIW, the oil damped spindle and acrylic platter seems to attract dust and static a lot less than any other turntable I had before...including Duals, HK Rabco, Linn, SOTA, Technics, etc.
Ok guys
My question is this, nothing major, more of a curiosity. When playing an album does it make a difference if you leave the dust cover up or down? Probably stupid question but hey there are lots of opinions out there