I ran a Banshee 9S in the Masters and Minions event at GenCon this year. I was the only one on the team who was using an IS mech. I was also using the lightest mech in the group (the others were a Kodiak 2, a Daishi C, and a Cygnus 2). I was also by far the premier damage dealer on the team: the Gauss, HPPC, and LPPC tied with the TC meant that I was scoring far more hits than everyone else.