An AR "Pistol" or "SBR" really doesn't go in the same hunting category as a defensive pistol / revolver that you carry on your hip.
You are not going to be strapping it on your side in a quick draw holster like a pistol, you will be carrying it like a rifle.
So basically it's yes if you can carry a rifle with you, you should. But possibly still bring a pistol.
You can do a standard AR15 at around the 5 pound mark and be fairly short with minimum stock length and 14.5" barrel with flash hider attached.
Most of the "AR Pistols" are not that much different in size / weight unless you go for something like the SIG MCX
https://www.sigsauer.com/store/sig-mcx-rattler-psb.html
But even then, at 5.5 pounds, I can get a complete full sized AR in that same weight, so you are just saving 7 inches length
The SBR or "AR Pistol" would more likely be the replacement for your primary rifle and would tend to be carried as such.