I use the torque wrench in completely the opposite fashion. I was always told if it feels tight by hand that is good enough. However, this would always lead to various kinds of damage striped threads, u name it, I've made a mess of it, with the safety net of always using a torque wrench set to a little under specification has led to less self inflicted damage.
Yes I carry a torque wrench with me or plan to when I finish Pleiades 'tube tube'. U can by some really small digital torque wrench that would fit in your pocket.