Bean counters often have a say in what weapon officers carry. You carry what the department issues. If you think that all LEO's are into guns as much as the people on this forum you would be mistaken. Many could give a rip.
Now you might find it interesting what is carried when politics and department mandates don't apply. For officers who are into their guns some would still pick the Glock for it's dependability but others might just pick a slicked up 1911. I know a few who have.