Anecdotal story: I have a friend who works for the Indiana State Police and was on the committee to procure new service pistols. In every category, the Springfield XD won. Problem was, it had a grip safety. ISP requirements dictate that no safeties could interfere with operation when needed, as they may have to fire in a compromising situation if in a struggle, for example. Not being able to firmly grip the pistol and engage the safety was a non-starter. When drawn, the firearm had to fire if the trigger was pulled every time. So Glock it was, which only has a trigger safety.