Manual Safeties are a good Idea

"but the Browning 9mm never fired,"
http://www.policeone.com/chiefs-sheriffs/articles/1738027-Texas-man-tried-to-shoot-police-chief/

JR has some more on this:
http://akeyboardanda45.blogspot.com/2008/09/i-think-he-needs-better-holster.html#links

If the Chief had been carrying a Glock he would have gotten shot.