Tire/wheel change on the road

Going beyond the click on a torque wrench is not a good idea, that's why it clicks. A little bit probably won't hurt, but a lot can't be a good practice to get into.

Proto is good stuff, take care of it and it will last. If it's rated to torque left hand thread, and it doesn't click, then something has broken. That may affect the right hand thread torque, but I don't know.