A glass and a half is your cut off? My god, man, how do you expect to fund our economy?
I know this doesn't solve anyone's problems, just me talking out loud... Based on what I've seen with the gun industry lately, I bet your incorrect grips have less to do with "meeting demand" and more to do with poor management/QA. I equate this to the issues encountered during The Great AW Omega Watch Buy. It seems like there is such a glut of product out there right now, post-Sandy Hook, that Sig should have paid you to accept your gun.
That said, Sig still continues to impress me with its accuracy. My Glock is great and I continue to run it regularly, but my Sigs seem to stack the holes on top of one another better.