German torque spec: "gutentight" ;-)
As a professional mechanic, as much as I would like to torque each and every bolt, I simply cannot. Good mechanics have a feel for how tight a bolt should be based on size, thread pitch, etc. I would venture that I can get pretty close to torque spec by hand on 90% of bolts.
Some things to keep in mind:
-Bolts rust and get hard to break loose
-There is no accurate way to measure amount of torque to loosen a bolt with common hand tools. Due to bolt design, any given bolt will always take more torque to loosen than the tightening spec. IE: after tightening to 80ft/lb does not mean 80ft/lb to "break loose".
That being said, most mechanically inclined people have a good grasp of a bolt that is "too tight" when trying to loosen it. I wouldnt be surprised if your brake calipers were overtightened, most mechanics seem to over do it a bit. I tell ya, finesse is something many don't have, people need to realize that most of the time "just snug" is just fine!
Once you surpass the bolts elastic range, it isn't the same.