Yep...I just checked again and the SS gallery clearly shows the open or "force gesture" left hand and the SDCC picutes (just go back one page of posts on this thread to see them re-posted) clearly shows a saber grip or pistol grip left hand.
Edit - And, the evidence. Case closed. Compliments of Darth Perry Mason!
Edit2 - It appears that both, the left AND right hands are different in these pics. I am convinced that there are at least 2 sets of the hands.
Holy ^^^^, how'd I miss it, that left hand right there will hold the saber, bravo Sideshow!