That's what I do as well--except for 300 BLK. My 7.5" 300 pistol is a handy truck gun for when I'm in the boondocks shooting rifles long range. The short length is why I don't suppress it--or use a 5.56 SBR instead.
We've repeatedly had people roll up on us with uncertain intent. Most recently, a group started setting up to shoot towards our location and we drove out for a chat. Another time, I had to bail out of a tent with an AR in the middle of the night when some jackasses in a monster truck drove into my campsite.