Keep it out and up in your line of sight to the target when reloading. It probably won't go into battery because you can't slam the mag hard enough with nearly straight arms. You'll also be able to keep the threat in your line of sight while reloading. You don't want to be looking down during a reload.
I pull the pistol in toward my body about half way during reloads. Now the pistol is still up and in my line of sight to target but not extended all the way. Once the mag is seated the slide is racketed and pistol re extended toward the target. My mag seating is simply a hard follow thru with the mag insert. Speed it up and when the mag seats follow past that point with good pressure. Makes a great click and there is no wasted time with a second bump.