"3Gun" does not have "Production". I also don't think 2011s are legal in Revolver or SS in USPSA.
Glock makes a great production gun, and a decent pistol for Limited. I put a whole lotta rounds through a G35 in Limited, Production, and a brief stint in Open, as well as my go-to 3 gun pistol. After switching to a 2011, I'll never look back at a Glock for anything other than Production. I know plenty of people run them in Limited and 3 gun, but for Limited, a .40 2011 is tops.