For me, I thought about them too for hunting, but I only need
the 1st shot.

I also thought practice enables us to know our
equipment enough that we don't need training wheels? LOL!
Sort of kidding there. I'm thinking if you know your rifle well
enough, after a while you get use to it. So if you are without a
tactical knob, it shouldn't be a deterrent for lack of chambering
additional rounds in a hurry if you practice with your gun.
Another issue is to make sure the larger knob doesn't cramp
your room for the scope when sliding back and forth.(most likely
thinking manufacturers already thought this out... or so you'd
hope. LOL!)
iSnipe