Detectives and left handed holsters
In Pilot, Casey Shraeger is always seen with a holster on her left, but she pulls the trigger with her right hand when she fired two shots at the Asian man with the shotgun. Amber Tamblyn holds the gun kinda odd, but point is, she draws her gun with her left hand but holds and fires it like a right-hander. After rewatching a scene before they entered the building, I noticed Walsh had a left-hand holster the entire time and pulled out the gun with the left hand but fired with the right, too. But some of them have right-hand holsters and fire with their right.
Can someone clear this confusion? Because I'm very, very sure that right handers always use a right-handed holster. Isn't it more natural, and faster? Is there some sort of real life clause where they'd make detectives wear guns on the left so they'd think before drawing? Or is it training?
Any help is appreciated. Thanks!