Too much thinking.
Compressed when moving (to be clear pistol in tight to chest pointed directly outward) and out pointing if not moving.
1. I can just piston out and shoot at the same time. Plus its less heavy for a more extended period of time.
2. If you're in front of me, you're the BG. I want to sweep you.
3. this is likely a home situation. If I am moving, then its less of a chance someone can grab it. If not moving I am facing the threat and likely braced.
If its outdoors its likely one handed and there is not ready position. I've shot you or you you've shot me.