Not sure if they discontinued it or not? I hope not. I know in July's (2009) issue of "Guns" they mention handguns used in USPSA and Jessie Abbate of Team Glock uses a Glock 24, .40 S&W, that won her the 2008 USPSA Ladies Limited Division national championship. I know Dave Sevigny and Randi Rogers use a Glock 34 in 9mm.
I have realized that having adjustable sights makes a big difference. This is the first time I have owned a pistol with adjustable sights and having the opportunity to dial it in.