99.9 no torque wrench for me, only when an arm may be trying to bottom out. That being said, as with all mechanics there is a feel or "touch" in these cases, auto wheel bearings, all of our bike cup and cone and on and on. I am not shy about tightening these, a regular ratchet or dedicated crank bolt wrench gets most of what I can give it with light and or residual lube.
If you think about how much force it takes to remove a properly seated crank arm, that can temper your install if you have the experience to convert it.
Never had one come loose or need retorque, maybe mine are too tight.
